/* =============================================================
   STYLE.CSS — Φροντιστήρια Συμβολή
   Mobile-first · Minimal · Modern
   Inspired by sabazioti.gr aesthetics
   ============================================================= */


/* ---------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   --------------------------------------------------------- */
:root {
    /* ── Primary Blue palette ── */
    --blue-50:  #EBF1F9;
    --blue-100: #C8D9EF;
    --blue-200: #93B3DF;
    --blue-500: #2563A8;
    --blue-600: #1A4F8F;
    --blue-700: #1A3C6E;
    --blue-800: #142D52;
    --blue-900: #0F2240;

    /* ── Accent Yellow palette ── */
    --yellow-50:  #FFF9E6;
    --yellow-100: #FFF0BF;
    --yellow-400: #F9C846;
    --yellow-500: #F0B429;
    --yellow-600: #D99E1C;

    /* ── Neutrals ── */
    --white:    #FFFFFF;
    --gray-50:  #F8F9FA;
    --gray-100: #F1F3F5;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #ADB5BD;
    --gray-500: #6C757D;
    --gray-600: #495057;
    --gray-700: #343A40;
    --gray-800: #212529;
    --gray-900: #16191D;

    /* ── Semantic aliases ── */
    --primary:        var(--blue-500);
    --primary-dark:   var(--blue-700);
    --primary-darker: var(--blue-800);
    --accent:         var(--yellow-500);
    --accent-light:   var(--yellow-400);
    --text:           var(--gray-800);
    --text-muted:     var(--gray-500);
    --bg:             var(--white);
    --bg-soft:        var(--gray-50);
    --surface:        var(--white);

    /* ── Typography ── */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs:   0.75rem;   /* 12px */
    --font-size-sm:   0.875rem;  /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-md:   1.125rem;  /* 18px */
    --font-size-lg:   1.25rem;   /* 20px */
    --font-size-xl:   1.5rem;    /* 24px */
    --font-size-2xl:  2rem;      /* 32px */
    --font-size-3xl:  2.5rem;    /* 40px */
    --font-size-4xl:  3rem;      /* 48px */

    /* ── Spacing scale ── */
    --space-xs:   0.25rem;
    --space-sm:   0.5rem;
    --space-md:   1rem;
    --space-lg:   1.5rem;
    --space-xl:   2rem;
    --space-2xl:  3rem;
    --space-3xl:  4rem;
    --space-4xl:  6rem;

    /* ── Border Radius (pill shapes) ── */
    --radius-sm:   0.5rem;
    --radius-md:   0.75rem;
    --radius-lg:   1rem;
    --radius-xl:   1.5rem;
    --radius-pill:  100vw;

    /* ── Shadows ── */
    --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg:  0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl:  0 12px 40px rgba(0, 0, 0, 0.14);
    --shadow-nav: 0 4px 24px rgba(0, 0, 0, 0.1);

    /* ── Transitions ── */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 150ms var(--ease-out);
    --transition-base: 300ms var(--ease-out);
    --transition-slow: 500ms var(--ease-out);

    /* ── Layout ── */
    --container-max: 1200px;
    --nav-height-desktop: 64px;
    --nav-height-mobile:  64px;
}


/* ---------------------------------------------------------
   2. CSS RESET & BASE
   --------------------------------------------------------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height-desktop) + var(--space-xl));
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.65;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Extra bottom padding on mobile for the bottom nav */
    padding-bottom: calc(var(--nav-height-mobile) + var(--space-lg));
}

/* Remove bottom padding on desktop (no bottom nav) */
@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
}

/* Accessible focus styles */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}


/* ---------------------------------------------------------
   3. LAYOUT UTILITIES
   --------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}

.section {
    padding: var(--space-3xl) 0;
}

.section h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
    .section h2 {
        font-size: var(--font-size-2xl);
    }
}


/* ---------------------------------------------------------
   4. HERO SECTION — High-impact welcome
   --------------------------------------------------------- */
.section--hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    /* Lighter, premium corporate blue gradient */
    background: radial-gradient(circle at 50% 50%, #226ec4 0%, #154680 100%);
    color: var(--white);
    padding: 0;
    overflow: hidden;
}

#hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Technical math grid paper overlay */
.hero__pattern-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 200px 200px, 200px 200px, 40px 40px, 40px 40px;
    pointer-events: none;
    z-index: 1;
}



/* Hero content layout */
.hero__content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Hero Schedule Card */
.hero__schedule-card {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-lg), inset 0 1px 1px rgba(255, 255, 255, 0.1);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
    text-align: left;
}

.hero__schedule-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: var(--shadow-xl), inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

.schedule-card__header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--space-sm);
}

.schedule-card__icon {
    color: var(--accent-light);
}

.schedule-card__header h3 {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--white);
}

.schedule-card__body {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.schedule-card__row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
}

.schedule-card__day-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.schedule-card__day-info strong {
    font-size: var(--font-size-sm);
    color: var(--white);
    font-weight: 600;
}

.schedule-card__day-info span {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.6);
}

.schedule-card__time-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.schedule-card__time-info span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-light);
    line-height: 1.4;
}

.time-spacer {
    font-size: var(--font-size-sm);
    opacity: 0;
    line-height: 1.4;
}

.schedule-card__divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
}

.schedule-card__row--closed {
    opacity: 0.6;
}

.badge-closed {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

/* Kicker / eyebrow text */
.hero__kicker {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-light);
    background: rgba(240, 180, 41, 0.12);
    padding: var(--space-xs) var(--space-lg);
    border-radius: var(--radius-pill);
    margin-bottom: var(--space-xl);
}

/* Heading */
.section--hero h1 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
}

.hero__accent {
    color: var(--accent-light);
    display: block;
}

/* Tagline */
.hero__tagline {
    font-size: var(--font-size-base);
    line-height: 1.7;
    opacity: 0.85;
    max-width: 540px;
    margin-bottom: var(--space-xl);
}

/* CTA Buttons */
.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

/* Trust badges */
.hero__badges {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.hero__badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    min-width: 90px;
}

.hero__badge strong {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--accent-light);
}

.hero__badge span {
    font-size: var(--font-size-xs);
    font-weight: 500;
    opacity: 0.7;
    white-space: nowrap;
}

/* Desktop hero adjustments */
@media (min-width: 768px) {
    .section--hero {
        min-height: 90vh;
    }

    .section--hero h1 {
        font-size: var(--font-size-4xl);
    }

    .hero__tagline {
        font-size: var(--font-size-md);
    }
}


/* ---------------------------------------------------------
   4a. BUTTON SYSTEM
   --------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.75rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-pill);
    border: 2px solid transparent;
    cursor: pointer;
    transition:
        background var(--transition-fast),
        color var(--transition-fast),
        border-color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

/* Primary (solid yellow-accent on hero) */
.btn--primary {
    background: var(--accent);
    color: var(--gray-900);
    border-color: var(--accent);
    box-shadow: 0 4px 14px rgba(240, 180, 41, 0.3);
}

.btn--primary:hover {
    background: var(--yellow-600);
    border-color: var(--yellow-600);
    box-shadow: 0 6px 20px rgba(240, 180, 41, 0.4);
}

/* Outline (white border on hero) */
.btn--outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--white);
}

@media (min-width: 768px) {
    .btn {
        padding: 0.875rem 2.25rem;
        font-size: var(--font-size-base);
    }
}


/* ---------------------------------------------------------
   4b. SECTION HEADER COMPONENT
   --------------------------------------------------------- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header__kicker {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header__line {
    width: 50px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-pill);
    margin: 0 auto;
}

.section-header__desc {
    max-width: 560px;
    margin: var(--space-md) auto 0;
    font-size: var(--font-size-base);
    color: var(--text-muted);
    line-height: 1.7;
}

@media (min-width: 768px) {
    .section-header {
        margin-bottom: var(--space-3xl);
    }
}


/* =============================================================
   4c. ABOUT SECTION — Ιστορία & Φιλοσοφία
   ============================================================= */

.section--about {
    background: var(--bg);
    position: relative;
    z-index: 10;
    margin-top: -48px;
    border-top-left-radius: 40px;
    border-top-right-radius: 40px;
    box-shadow: 0 -16px 32px rgba(21, 70, 128, 0.08);
    padding-top: calc(var(--space-3xl) + 24px);
}

/* Two-column card grid */
.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
    .about__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
}

/* About cards */
.about__card {
    padding: var(--space-xl);
    background: var(--bg-soft);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.about__card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.about__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
}

.about__card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-md);
}

.about__card p {
    font-size: var(--font-size-base);
    color: var(--gray-600);
    line-height: 1.75;
    margin-bottom: var(--space-md);
}

.about__card p:last-child {
    margin-bottom: 0;
}

/* Values strip */
.about__values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    padding: var(--space-xl);
    background: var(--blue-50);
    border-radius: var(--radius-xl);
}

@media (min-width: 768px) {
    .about__values {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-lg);
    }
}

.about__value {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-dark);
}

.about__value-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 50%;
    color: var(--primary);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}


/* =============================================================
   4d. FACILITIES SECTION — Εγκαταστάσεις
   ============================================================= */

.section--facilities {
    background: var(--bg-soft);
}

/* Masonry-style grid */
.facilities__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 640px) {
    .facilities__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .facilities__item--wide {
        grid-column: span 2;
    }
}

/* Each facility card */
.facilities__item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.facilities__item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.facilities__item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}

.facilities__item--wide img {
    height: 280px;
}

.facilities__item:hover img {
    transform: scale(1.04);
}

@media (min-width: 768px) {
    .facilities__item img {
        height: 300px;
    }

    .facilities__item--wide img {
        height: 360px;
    }
}

/* Caption overlay */
.facilities__caption {
    padding: var(--space-lg);
}

.facilities__caption h3 {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-xs);
}

.facilities__caption p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.5;
}


/* ---------------------------------------------------------
   4e. STAGGERED ANIMATION DELAYS
   --------------------------------------------------------- */

/* Children of grids get staggered entrance */
[data-animate]:nth-child(2) {
    transition-delay: 100ms;
}

[data-animate]:nth-child(3) {
    transition-delay: 200ms;
}

[data-animate]:nth-child(4) {
    transition-delay: 300ms;
}


/* =============================================================
   5. DESKTOP NAVIGATION — Floating Pill Bar
   ============================================================= */

/* Hidden on mobile */
.desktop-nav {
    display: none;
}

@media (min-width: 768px) {
    .desktop-nav {
        display: block;
        position: fixed;
        top: var(--space-lg);
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
        width: max-content;
        max-width: calc(100% - var(--space-xl) * 2);
        /* Start transparent, JS adds .scrolled */
        transition:
            background-color var(--transition-base),
            box-shadow var(--transition-base),
            transform var(--transition-base);
    }

    .desktop-nav__inner {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        padding: var(--space-sm) var(--space-lg);
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(16px) saturate(180%);
        -webkit-backdrop-filter: blur(16px) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.25);
        border-radius: var(--radius-pill);
        box-shadow: var(--shadow-nav);
        transition: background var(--transition-base);
    }

    /* When user scrolls: increase opacity */
    .desktop-nav.scrolled .desktop-nav__inner {
        background: rgba(255, 255, 255, 0.96);
        box-shadow: var(--shadow-lg);
    }

    /* Logo */
    .desktop-nav__logo {
        display: flex;
        align-items: center;
        flex-shrink: 0;
        margin-right: var(--space-md);
    }

    .desktop-nav__logo img {
        height: 30px;
        width: auto;
    }

    /* Nav Links */
    .desktop-nav__links {
        display: flex;
        align-items: center;
        gap: var(--space-xs);
    }

    .desktop-nav__link {
        display: inline-block;
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-sm);
        font-weight: 500;
        color: var(--gray-700);
        transition: color var(--transition-fast);
        white-space: nowrap;
    }

    .desktop-nav__link:hover,
    .desktop-nav__link.active {
        color: var(--primary);
    }

    /* CTA link (Επικοινωνία) */
    .desktop-nav__link--cta {
        color: var(--white);
        background-color: var(--primary);
        border: none;
        border-radius: var(--radius-pill);
        font-weight: 600;
        padding: var(--space-sm) var(--space-lg);
        box-shadow: 0 4px 10px rgba(37, 99, 168, 0.15);
        transition: 
            background-color var(--transition-fast),
            transform var(--transition-fast),
            box-shadow var(--transition-fast);
    }

    .desktop-nav__link--cta:hover {
        background-color: var(--blue-700);
        color: var(--white);
        transform: translateY(-1px);
        box-shadow: 0 6px 14px rgba(37, 99, 168, 0.25);
    }

    .desktop-nav__link--cta:active {
        transform: translateY(0);
        box-shadow: 0 4px 10px rgba(37, 99, 168, 0.15);
    }

    .desktop-nav__link--cta.active {
        background-color: var(--blue-800);
        color: var(--white);
    }
}

/* Back to Home floating link (desktop only) */
.back-to-home {
    display: none;
}

@media (min-width: 992px) {
    .back-to-home {
        display: inline-flex;
        align-items: center;
        gap: var(--space-xs);
        position: fixed;
        top: 24px;
        left: var(--space-xl);
        z-index: 1001;
        font-size: var(--font-size-sm);
        font-weight: 600;
        color: var(--primary);
        text-decoration: none;
        padding: var(--space-sm) var(--space-md);
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid var(--gray-200);
        border-radius: var(--radius-pill);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        transition: 
            color var(--transition-fast), 
            background-color var(--transition-fast), 
            transform var(--transition-fast), 
            box-shadow var(--transition-fast);
    }

    .back-to-home:hover {
        color: var(--blue-700);
        background-color: var(--white);
        transform: translateX(-3px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .back-to-home svg {
        transition: transform var(--transition-fast);
    }
    
    .back-to-home:hover svg {
        transform: translateX(-2px);
    }
}


/* =============================================================
   6. MOBILE NAVIGATION — Fixed Bottom Pill Bar
   ============================================================= */

.mobile-nav {
    position: fixed;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: calc(100% - var(--space-xl) * 2);
    max-width: 360px;
    transition: transform var(--transition-base);
}

.mobile-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: var(--space-sm) var(--space-xs);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-xl);
}

/* Each nav item */
.mobile-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--gray-500);
    border-radius: var(--radius-md);
    transition:
        color var(--transition-fast),
        background-color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.mobile-nav__item svg {
    transition: transform var(--transition-fast);
}

.mobile-nav__item:hover,
.mobile-nav__item.active {
    color: var(--primary);
}

.mobile-nav__item.active svg {
    transform: scale(1.1);
}

/* Hamburger button styles */
.mobile-nav__hamburger {
    position: relative;
}

.mobile-nav__hamburger[aria-expanded="true"] {
    color: var(--primary);
}

/* Hide mobile nav on desktop */
@media (min-width: 768px) {
    .mobile-nav {
        display: none;
    }
}


/* =============================================================
   7. MOBILE DRAWER — Side-panel overlay
   ============================================================= */

/* Backdrop (semi-transparent dark overlay) */
.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: rgba(15, 34, 64, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition:
        opacity var(--transition-base),
        visibility var(--transition-base);
}

.drawer-backdrop.open {
    opacity: 1;
    visibility: visible;
}

/* Drawer panel */
.drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1200;
    width: min(85vw, 380px);
    height: 100%;
    background: var(--white);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.drawer.open {
    transform: translateX(0);
}

/* Drawer header */
.drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--gray-200);
}

.drawer__logo img {
    height: 34px;
    width: auto;
}

.drawer__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--gray-600);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.drawer__close:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

/* Drawer links */
.drawer__links {
    flex: 1;
    padding: var(--space-lg) var(--space-xl);
}

.drawer__link {
    display: block;
    padding: var(--space-md) 0;
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.drawer__link:hover {
    color: var(--primary);
    padding-left: var(--space-sm);
}

/* CTA link in drawer */
.drawer__link--cta {
    display: inline-block;
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-xl);
    background: var(--primary);
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius-pill);
    border-bottom: none;
    text-align: center;
    transition: background var(--transition-fast);
}

.drawer__link--cta:hover {
    background: var(--primary-dark);
    padding-left: var(--space-xl);
    color: var(--white);
}

/* Sub-links in drawer (Τάξεις) */
.drawer__sublabel {
    display: block;
    padding: var(--space-md) 0 var(--space-xs);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.drawer__sublinks {
    padding-left: var(--space-md);
}

.drawer__sublinks .drawer__link {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) 0;
}

/* Drawer footer */
.drawer__footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.drawer__phone {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.drawer__phone a {
    color: var(--primary);
    font-weight: 600;
}

.drawer__social {
    display: flex;
    gap: var(--space-md);
}

.drawer__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gray-100);
    color: var(--gray-600);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.drawer__social a:hover {
    background: var(--primary);
    color: var(--white);
}


/* =============================================================
   4f. PROGRAMS SECTION — Accordion
   ============================================================= */

.section--programs {
    background: var(--bg);
}

/* Accordion container */
.accordion {
    max-width: 820px;
    margin: 0 auto;
}

/* Each accordion item */
.accordion__item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    overflow: hidden;
    background: var(--white);
    transition: box-shadow var(--transition-fast);
}

.accordion__item:hover {
    box-shadow: var(--shadow-sm);
}

/* Trigger button */
.accordion__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text);
    text-align: left;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.accordion__trigger:hover {
    background: var(--blue-50);
}

.accordion__trigger[aria-expanded="true"] {
    background: var(--blue-50);
    color: var(--primary);
}

.accordion__trigger-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Badge pill on trigger */
.accordion__badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: var(--blue-50);
    color: var(--primary);
    white-space: nowrap;
}

.accordion__badge--accent {
    background: var(--yellow-50);
    color: var(--yellow-600);
}

.accordion__badge--dark {
    background: var(--blue-700);
    color: var(--white);
}

.accordion__title {
    line-height: 1.3;
}

/* Chevron rotation */
.accordion__chevron {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--gray-400);
}

.accordion__trigger[aria-expanded="true"] .accordion__chevron {
    transform: rotate(180deg);
    color: var(--primary);
}

/* Panel — collapsed state */
.accordion__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s var(--ease-out);
}

.accordion__panel[aria-hidden="false"],
.accordion__trigger[aria-expanded="true"] + .accordion__panel {
    grid-template-rows: 1fr;
}

.accordion__body {
    overflow: hidden;
}

/* Inner content padding (only visible when open) */
.accordion__trigger[aria-expanded="true"] + .accordion__panel .accordion__body {
    padding: 0 var(--space-xl) var(--space-xl);
}

.accordion__desc {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

/* Programs table */
.programs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
}

.programs-table thead {
    background: var(--blue-50);
}

.programs-table th {
    text-align: left;
    font-weight: 600;
    color: var(--primary-dark);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.programs-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.programs-table tbody tr:last-child td {
    border-bottom: none;
}

.programs-table tbody tr:hover {
    background: var(--gray-50);
}

/* On very small screens, make the table horizontally scrollable */
@media (max-width: 480px) {
    .accordion__body {
        overflow-x: auto;
    }

    .programs-table {
        min-width: 440px;
    }
}

/* Perks list below table */
.accordion__perks {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.accordion__perk {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--primary);
    background: var(--blue-50);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
}


/* =============================================================
   4g. CAREER COUNSELING SECTION
   ============================================================= */

.section--counseling {
    background: var(--bg-soft);
}

.counseling__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

@media (min-width: 768px) {
    .counseling__layout {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
    }
}

/* Info column */
.counseling__info h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
    .counseling__info h2 {
        font-size: var(--font-size-2xl);
    }
}

.counseling__info p {
    font-size: var(--font-size-base);
    color: var(--gray-600);
    line-height: 1.75;
    margin-bottom: var(--space-xl);
}

/* Feature list */
.counseling__features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.counseling__features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
    line-height: 1.5;
}

.counseling__features svg {
    flex-shrink: 0;
    margin-top: 1px;
}


/* =============================================================
   4h. INTEREST FORM
   ============================================================= */

.counseling__form-wrap {
    position: relative;
}

.interest-form {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

@media (min-width: 768px) {
    .interest-form {
        padding: var(--space-2xl);
    }
}

.interest-form__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-xs);
}

.interest-form__subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
    line-height: 1.5;
}

/* Form groups */
.interest-form__group {
    margin-bottom: var(--space-lg);
}

.interest-form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--space-xs);
}

.interest-form__optional {
    font-weight: 400;
    color: var(--text-muted);
}

/* Inputs, select, textarea */
.interest-form__input,
.interest-form__select,
.interest-form__textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text);
    background: var(--bg-soft);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.interest-form__input:focus,
.interest-form__select:focus,
.interest-form__textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.12);
    background: var(--white);
}

/* Validation states */
.interest-form__input:user-invalid,
.interest-form__select:user-invalid {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

/* Select arrow */
.interest-form__select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236C757D' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* Textarea */
.interest-form__textarea {
    resize: vertical;
    min-height: 80px;
}

/* Submit button */
.interest-form__submit {
    width: 100%;
    margin-top: var(--space-sm);
    padding: 0.875rem;
}

/* Success message */
.interest-form__success {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    margin-top: var(--space-lg);
    background: #e8f5e9;
    color: #2e7d32;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.interest-form__success[hidden] {
    display: none;
}


/* =============================================================
   4i. NEWS SECTION
   ============================================================= */

.section--news {
    background: var(--bg);
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.news-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.news-card__date {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.news-card__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.news-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.news-card__link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.news-card__link:hover {
    color: var(--blue-700);
}

/* =============================================================
   4j. CONTACT SECTION
   ============================================================= */

.section--contact {
    background: var(--blue-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: stretch;
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
}

.contact-grid__maps {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

@media (min-width: 992px) {
    .contact-grid__maps {
        height: 100%;
    }
}

.contact-branch-card {
    background: var(--surface);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-branch-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

@media (min-width: 992px) {
    .contact-branch-card {
        flex: 1;
    }
}

.contact-branch-card__title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--primary-dark);
    margin: 0;
}

.contact-branch-card__title svg {
    color: var(--primary);
    flex-shrink: 0;
}

.contact-branch-card__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.contact-branch-card__details p {
    margin: 0;
}

.contact-branch-card__details a {
    color: inherit;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.contact-branch-card__details a:hover {
    color: var(--primary);
}

.contact-branch-card__map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    height: 180px; /* Default height on mobile */
    flex-grow: 1;  /* On desktop, will expand to take available height */
}

@media (min-width: 992px) {
    .contact-branch-card__map {
        height: auto; /* Allow flexbox stretch to control height */
        min-height: 150px;
    }
}

.contact-branch-card__map iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.contact-grid__form {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.contact-grid__form .interest-form {
    height: 100%;
}

.dynamic-field {
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =============================================================
   4k. FOOTER
   ============================================================= */

.footer {
    background: var(--blue-900);
    color: var(--white);
    padding: var(--space-4xl) 0 var(--space-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 992px) {
    .footer__grid {
        grid-template-columns: 2fr 1.5fr 1.5fr 1.2fr;
    }
}

.footer__brand h3 {
    font-size: var(--font-size-xl);
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

.footer__brand p {
    color: var(--gray-300);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    max-width: 320px;
}

.footer__contact h4,
.footer__schedule h4,
.footer__social h4 {
    font-size: var(--font-size-md);
    margin-bottom: var(--space-lg);
    font-weight: 600;
}

.footer__contact ul,
.footer__schedule ul {
    list-style: none;
    padding: 0;
}

.footer__contact li,
.footer__schedule li {
    color: var(--gray-300);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    line-height: 1.5;
}

.footer__contact li svg,
.footer__schedule li svg {
    margin-top: 3px;
    flex-shrink: 0;
}

.footer__schedule-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.footer__schedule-details strong {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.social-links a:hover {
    background: var(--accent);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--gray-400);
    font-size: var(--font-size-xs);
}

@media (min-width: 768px) {
    .footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer__legal-links {
    display: flex;
    gap: var(--space-md);
}

.footer__legal-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__legal-links a:hover {
    color: var(--accent);
}

/* =============================================================
   8. SCROLL ANIMATIONS — Fade-in on scroll
   ============================================================= */

/* Elements marked with [data-animate] will fade in */
[data-animate] {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 0.6s var(--ease-out),
        transform 0.6s var(--ease-out);
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}


/* =============================================================
   9. BODY SCROLL LOCK — When drawer is open
   ============================================================= */
body.drawer-open {
    overflow: hidden;
}


/* =============================================================
   10. REDUCED MOTION — Accessibility
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    [data-animate] {
        opacity: 1;
        transform: none;
    }
}


/* =============================================================
   11. LEGAL PAGES STYLING (Terms, Privacy, Cookies)
   ============================================================= */
.section--legal {
    padding-top: calc(var(--space-4xl) + 20px);
    padding-bottom: var(--space-4xl);
    background: var(--bg-soft);
    min-height: 80vh;
}

.legal-content {
    background: var(--white);
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .legal-content {
        padding: var(--space-2xl) var(--space-3xl);
    }
}

.legal-content h1 {
    color: var(--primary-dark);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-2xl);
    border-bottom: 2px solid var(--gray-200);
    padding-bottom: var(--space-sm);
}

.legal-content h2 {
    color: var(--primary);
    font-size: var(--font-size-md);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xs);
    font-weight: 700;
}

.legal-content p {
    line-height: 1.7;
    color: var(--text);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
}

.legal-content ul {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.legal-content li {
    line-height: 1.6;
    margin-bottom: var(--space-xs);
    color: var(--text);
    font-size: var(--font-size-sm);
}