/* EDVERA - Premium Education Global Brand */
/* Design System & Variables */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
    /* Palette - Base */
    --color-navy: #0B1C2D;
    /* Deep Academic Navy */
    --color-ivory: #F6F5F2;
    /* Ivory Off-White */
    --color-dark: #0E0E12;
    /* Deep near-black (Dark Mode Canvas) */
    --color-dark-sec: #14141B;
    /* Secondary Dark (Cards) */

    /* Accents */
    --accent-teal: #5FA6A6;
    --accent-amber: #D4B15A;
    --accent-violet: #8A7FBF;
    --accent-platinum: #C7C9CC;

    /* Semantic - Light Mode Default */
    --bg-page: var(--color-ivory);
    --bg-alt: #F8F8F8;
    --bg-card: #FFFFFF;
    --bg-nav: rgba(246, 245, 242, 0.95);

    --text-main: #121212;
    --text-muted: #666666;
    --text-inverse: #FFFFFF;

    --border-subtle: rgba(11, 28, 45, 0.1);
    --border-hover: rgba(11, 28, 45, 0.2);

    --primary-brand: var(--color-navy);
    /* Used for text links/highlights in light mode */

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;

    /* Spacing */
    --spacing-container: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Motion Constants */
    --ease-breath: cubic-bezier(0.22, 1, 0.36, 1);
    --duration-hover: 220ms;
    --duration-reveal: 360ms;
    --duration-card: 240ms;
}

/* Dark Mode Logic */
[data-theme="dark"] {
    --bg-page: #0E0E12;
    --bg-alt: #121216;
    --bg-card: #14141B;
    --bg-nav: rgba(14, 14, 18, 0.95);

    --text-main: #F5F5F7;
    --text-muted: #B8BCC6;
    --text-inverse: #121212;

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);

    --primary-brand: #F5F5F7;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-page: #0E0E12;
        --bg-alt: #121216;
        --bg-card: #14141B;
        --bg-nav: rgba(14, 14, 18, 0.95);

        --text-main: #F5F5F7;
        --text-muted: #B8BCC6;
        --text-inverse: #121212;

        --border-subtle: rgba(255, 255, 255, 0.06);
        --border-hover: rgba(255, 255, 255, 0.12);

        --primary-brand: #F5F5F7;
    }
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-family: var(--font-sans);
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s var(--ease-breath), color 0.3s var(--ease-breath);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 400;
    color: var(--text-main);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    position: relative;
    transition: color var(--duration-hover) var(--ease-breath);
}

ul {
    list-style: none;
}

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

/* Hero Ticket Element */
.hero-ticket-bg {
    background-color: #EAE3D2;
    padding: 3rem 2.5rem;
    border-radius: 40px;
    border-top-left-radius: 0;
    border-bottom-right-radius: 0;
    position: relative;
    transition: background-color var(--duration-hover) var(--ease-breath);
}

@media (min-width: 768px) {
    .hero-ticket-bg {
        padding: 4rem;
        margin-left: -4rem;
        margin-top: -2rem;
    }
}

[data-theme="dark"] .hero-ticket-bg {
    background-color: #3b3529;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .hero-ticket-bg {
        background-color: #3b3529;
    }
}

.hero-ticket-bg::before,
.hero-ticket-bg::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    background-color: var(--bg-page);
    border-radius: 50%;
    z-index: 1;
    transition: background-color 0.3s var(--ease-breath);
}

.hero-ticket-bg::before {
    top: -30px;
    left: -30px;
}

.hero-ticket-bg::after {
    bottom: -30px;
    right: -30px;
}

/* Utilities */
.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

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

.text-center {
    text-align: center;
}

.flex {
    display: flex;
}

.grid {
    display: grid;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.hidden {
    display: none;
}

.text-muted {
    color: var(--text-muted) !important;
}

/* Components: Buttons / CTAs */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border: 1px solid var(--text-main);
    cursor: pointer;
    transition: all var(--duration-hover) var(--ease-breath);
    background: transparent;
    color: var(--text-main);
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-page);
    /* Dynamic inverse */
    border-color: var(--text-main);
}

/* Update for Dark Mode specific button visibility if needed */
[data-theme="dark"] .btn-primary {
    background: var(--text-main);
    color: #0E0E12;
    /* Hardcode dark text on white btn */
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .btn-primary {
        color: #0E0E12;
    }
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    border-color: var(--border-subtle);
}

.btn-secondary:hover {
    border-color: var(--text-main);
    transform: translateY(-2px);
}

/* Hover Link Effect */
.hover-link {
    position: relative;
    display: inline-block;
}

.hover-link::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-teal);
    /* Accent interaction */
    transition: width var(--duration-hover) var(--ease-breath);
}

.hover-link:hover {
    color: var(--text-main);
}

.hover-link:hover::after {
    width: 100%;
}

/* Cards */
/* Ambient Dark Hover Effect */
.card {
    background: var(--bg-card);
    padding: 2.5rem;
    border: 1px solid var(--border-subtle);
    border-left: 1px solid var(--border-subtle);
    border-radius: 4px;
    overflow: hidden;
    /* Ensure image stays within corners */
    padding: 0;
    /* padding handled by inner content wrapper now if needed, or we mix */
    display: flex;
    flex-direction: column;

    /* Smooth transition for all color properties */
    transition:
        transform var(--duration-card) var(--ease-breath),
        box-shadow var(--duration-card) var(--ease-breath),
        border-color var(--duration-card) var(--ease-breath),
        background-color var(--duration-card) var(--ease-breath),
        color var(--duration-card) var(--ease-breath);
}

.card-img {
    width: 100%;
    /* Remove fixed height to prevent bad cropping of text */
    height: auto;
    /* Allow natural height */
    display: block;
    border-bottom: 1px solid var(--border-subtle);
    /* Focus on the top part (heads/text usually) */
    border-bottom: 1px solid var(--border-subtle);
}

.card-content {
    padding: 2.5rem;
    flex: 1;
}

.card h3,
.card p,
.card .text-muted,
.card hr {
    transition: color var(--duration-card) var(--ease-breath), border-color var(--duration-card) var(--ease-breath), opacity var(--duration-card) var(--ease-breath);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    /* Slightly deeper shadow */

    /* The Magic Switch: Force dark background on hover */
    background-color: var(--color-navy);
    border-color: var(--color-navy);
    border-left: 3px solid var(--accent-amber);
}

/* Force text to white/light on hover */
.card:hover h3,
.card:hover p {
    color: #F5F5F7 !important;
}

.card:hover .text-muted {
    color: rgba(245, 245, 247, 0.7) !important;
}

.card:hover hr {
    border-top-color: rgba(245, 245, 247, 0.2);
}

/* Dark Mode Specific Tweaks for Hover */
[data-theme="dark"] .card:hover {
    background-color: var(--bg-alt);
    /* Slightly lighter/different in dark mode to show lift */
    border-color: var(--border-hover);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .card:hover {
        background-color: var(--bg-alt);
        border-color: var(--border-hover);
    }
}

/* Remove the old white-text-on-hover logic */
.card:hover h3,
.card:hover p,
.card:hover .text-muted {
    color: inherit;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.2rem 0;
    transition: padding 300ms var(--ease-breath);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    font-weight: 600;
    color: var(--text-main);
    flex-shrink: 0;
    margin-right: 1rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    /* Vertical center for toggle */
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.8;
    white-space: nowrap;
}

.nav-links a:hover {
    opacity: 1;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-main);
    opacity: 0.7;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle-btn:hover {
    opacity: 1;
}

/* Animations */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--duration-reveal) var(--ease-breath), transform var(--duration-reveal) var(--ease-breath);
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays */
.delay-1 {
    transition-delay: 60ms;
}

.delay-2 {
    transition-delay: 120ms;
}

.delay-3 {
    transition-delay: 180ms;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 28, 45, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-reveal) var(--ease-breath);
}

.modal-content {
    background: var(--bg-card);
    width: 90%;
    max-width: 500px;
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: translateY(20px);
    transition: transform var(--duration-reveal) var(--ease-breath);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.is-active,
.element-is-active {
    /* fallback/helper class */
    opacity: 1;
    pointer-events: auto;
}

.modal-overlay.is-active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 200ms;
}

.modal-close:hover {
    color: var(--text-main);
}

.modal-header h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.modal-header p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-label span.required {
    color: #e53e3e;
    margin-left: 2px;
}

.form-label span.optional {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 0.8rem;
    margin-left: 0.3rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.8rem 1rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    background: var(--bg-page);
    color: var(--text-main);
    transition: border-color var(--duration-hover), box-shadow var(--duration-hover);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-teal);
    box-shadow: 0 0 0 3px rgba(95, 166, 166, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Premium Accordion (FAQ) */
.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--duration-hover) var(--ease-breath);
}

.accordion-item:hover {
    border-color: var(--text-main);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.accordion-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--text-main);
    transition: background-color var(--duration-hover);
}

.accordion-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    margin-right: 1.5rem;
}

.accordion-icon {
    position: relative;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.accordion-icon::before,
.accordion-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    background-color: var(--accent-teal);
    transition: transform 0.3s var(--ease-breath);
}

/* Horizontal line */
.accordion-icon::before {
    width: 100%;
    height: 2px;
    transform: translate(-50%, -50%);
}

/* Vertical line */
.accordion-icon::after {
    width: 2px;
    height: 100%;
    transform: translate(-50%, -50%);
}

/* Expanded State for Icon */
.accordion-header[aria-expanded="true"] .accordion-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    /* Rotates to match horizontal, making a minus? No, wait. */
    /* If vertical rotates 90deg, it becomes horizontal. If horizontal stays, they overlap => minus sign. */
}

.accordion-header[aria-expanded="true"] .accordion-icon::before {
    transform: translate(-50%, -50%) rotate(180deg);
}

.accordion-content {
    height: 0;
    overflow: hidden;
    transition: height 0.4s var(--ease-breath);
}

.accordion-body {
    padding: 0 2rem 2rem 2rem;
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 1.05rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* When open, body fades in */
.accordion-header[aria-expanded="true"]+.accordion-content .accordion-body {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
}

/* Active Styling for Item */
.accordion-item.is-active {
    border-color: var(--border-hover);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Logo Marquee Section */
.logo-marquee-section {
    background-color: var(--bg-page);
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-subtle);
    overflow: hidden;
}

.logo-marquee-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    padding: 1rem 0;
}

/* Gradient Masks for fade effect at edges */
.logo-marquee-container::before,
.logo-marquee-container::after {
    content: "";
    position: absolute;
    top: 0;
    width: 200px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.logo-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-page), transparent);
}

.logo-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-page), transparent);
}

.logo-marquee-track {
    display: flex;
    align-items: center;
    gap: 4rem;
    width: max-content;
    animation: scroll 30s linear infinite;
}

.logo-item {
    height: 45px;
    /* Fixed height for consistency */
    width: auto;
    opacity: 0.5;
    /* Subtle by default */
    filter: grayscale(100%);
    transition: opacity 0.3s, filter 0.3s;
}

.logo-item:hover {
    opacity: 1;
    filter: grayscale(0%);
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-50% - 2rem));
        /* Scroll half the track (original set) */
    }
}

/* Dark Mode adjustment for gradients */
[data-theme="dark"] .logo-marquee-container::before {
    background: linear-gradient(to right, var(--bg-page), transparent);
}

[data-theme="dark"] .logo-marquee-container::after {
    background: linear-gradient(to left, var(--bg-page), transparent);
}

[data-theme="dark"] .logo-item {
    filter: grayscale(100%) invert(1) brightness(0.8);
}

[data-theme="dark"] .logo-item:hover {
    filter: grayscale(0%) invert(0) brightness(1);
    /* Return to color is tricky in dark mode if logos are dark. 
                                                     better to keep them white/bright */
    filter: brightness(1);
    opacity: 1;
}

/* Mobile Navigation */
.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1100;
    color: var(--text-main);
}

.mobile-nav-toggle svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (max-width: 1024px) {
    .nav-container {
        justify-content: space-between;
        position: relative;
    }

    .mobile-nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        height: 100vh;
        background-color: var(--bg-page);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        padding: 2rem;
        transform: translateX(100%);
        transition: transform 0.4s var(--ease-breath), opacity 0.4s ease;
        z-index: 1050;
        opacity: 0;
        pointer-events: none;
        overflow-y: auto;
    }

    .nav-links.active {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        font-size: 1.5rem;
        font-family: var(--font-serif);
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav-links.active a {
        opacity: 1;
        transform: translateY(0);
    }

    /* Staggered animation for links */
    .nav-links.active a:nth-child(1) {
        transition-delay: 0.1s;
    }

    .nav-links.active a:nth-child(2) {
        transition-delay: 0.15s;
    }

    .nav-links.active a:nth-child(3) {
        transition-delay: 0.2s;
    }

    .nav-links.active a:nth-child(4) {
        transition-delay: 0.25s;
    }

    .nav-links.active a:nth-child(5) {
        transition-delay: 0.3s;
    }

    .nav-links.active a:nth-child(6) {
        transition-delay: 0.35s;
    }

    .nav-links.active a:nth-child(7) {
        transition-delay: 0.4s;
    }

    /* Theme toggle adjustment in mobile menu */
    .theme-toggle-btn {
        margin-top: 1rem;
        transform: scale(1.2);
    }
}

/* Diagnostic Modal Age Buttons */
.age-btn {
    padding: 0.8rem 0.5rem;
    background: var(--bg-page);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s ease;
}

.age-btn:hover {
    border-color: var(--accent-amber);
    background: rgba(212, 177, 90, 0.05);
}

.age-btn.selected {
    background-color: var(--accent-amber);
    color: #0E0E12;
    border-color: var(--accent-amber);
    font-weight: 600;
}

/* Ensure 4 columns look good on mobile within the modal */
@media (max-width: 480px) {
    .age-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}

/* Review Cards Marquee */
.review-card-img {
    height: 300px;
    /* Fixed height for consistency */
    width: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-subtle);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: white;
}

.review-card-img:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

/* Specific Marquee Adjustment for Reviews */
.logo-marquee-track img.review-card-img {
    opacity: 1;
    /* Unlike logos, reviews should be fully opaque */
    filter: none;
    /* No grayscale */
}