/* ============================================ */
/* CSS CUSTOM PROPERTIES (DESIGN TOKENS)         */
/* ============================================ */
:root {
    /* Light Theme (Default) */
    --color-primary: #f4b400;
    --color-primary-dark: #c79100;
    --color-primary-light: #ffd54f;
    --color-primary-glow: rgba(244, 180, 0, 0.3);

    --color-bg: #ffffff;
    --color-bg-alt: #fafaf8;
    --color-surface: #f5f5f2;
    --color-surface-hover: #efefea;

    --color-text: #2c2c2c;
    --color-text-secondary: #5a5a5a;
    --color-text-muted: #888888;

    --color-border: #e8e8e0;
    --color-border-light: #f0f0e8;

    --color-shadow-sm: rgba(0, 0, 0, 0.04);
    --color-shadow-md: rgba(0, 0, 0, 0.08);
    --color-shadow-lg: rgba(0, 0, 0, 0.12);
    --color-shadow-xl: rgba(0, 0, 0, 0.18);

    --color-overlay: rgba(0, 0, 0, 0.6);
    --color-glass-bg: rgba(255, 255, 255, 0.7);
    --color-glass-border: rgba(255, 255, 255, 0.5);

    --font-sans: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-nastaliq: 'Noto Nastaliq Urdu', 'Tajawal', 'Amiri', 'Scheherazade New', serif;
    --font-arabic: 'Tajawal', 'Amiri', 'Scheherazade New', 'Traditional Arabic', serif;

    --navbar-height: 70px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 50%;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #1a1a1a;
    --color-bg-alt: #1e1e1e;
    --color-surface: #252525;
    --color-surface-hover: #2e2e2e;

    --color-text: #e8e8e8;
    --color-text-secondary: #b8b8b8;
    --color-text-muted: #7a7a7a;

    --color-border: #383838;
    --color-border-light: #303030;

    --color-shadow-sm: rgba(0, 0, 0, 0.2);
    --color-shadow-md: rgba(0, 0, 0, 0.3);
    --color-shadow-lg: rgba(0, 0, 0, 0.4);
    --color-shadow-xl: rgba(0, 0, 0, 0.5);

    --color-overlay: rgba(0, 0, 0, 0.8);
    --color-glass-bg: rgba(30, 30, 30, 0.7);
    --color-glass-border: rgba(255, 255, 255, 0.08);
}

/* ============================================ */
/* RESET & BASE STYLES                          */
/* ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    overflow-x: hidden;
}

/* ============================================ */
/* SCROLL PROGRESS BAR                          */
/* ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-light));
    z-index: 10000;
    transition: width 0.1s linear;
    border-radius: 0 2px 0 0;
}

/* ============================================ */
/* PRELOADER                                    */
/* ============================================ */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.preloader--hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader__geometry {
    width: 80px;
    height: 80px;
    animation: preloaderSpin 3s linear infinite, preloaderPulse 2s ease-in-out infinite;
}

.preloader__geometry svg {
    width: 100%;
    height: 100%;
}

.preloader__text {
    margin-top: 1.5rem;
    font-family: var(--font-arabic);
    color: var(--color-primary);
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    animation: preloaderFadeText 2s ease-in-out infinite;
}

@keyframes preloaderSpin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes preloaderPulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

@keyframes preloaderFadeText {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

/* ============================================ */
/* FLOATING PARTICLES                           */
/* ============================================ */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    background-color: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }

    10% {
        opacity: 0.3;
    }

    90% {
        opacity: 0.15;
    }

    100% {
        opacity: 0;
        transform: translateY(-10vh) scale(1);
    }
}

/* ============================================ */
/* HEADER & NAVIGATION                          */
/* ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.header--scrolled {
    background-color: var(--color-glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px var(--color-shadow-sm);
    border-bottom: 1px solid var(--color-glass-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: var(--navbar-height);
}

.nav__brand-text {
    font-family: var(--font-nastaliq);
    font-size: 1.4rem;
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.nav__list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.25rem;
}

.nav__link {
    position: relative;
    display: inline-block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast);
    cursor: pointer;
}

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

.nav__link--active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2.5px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: width var(--transition-base);
}

.nav__link:hover::after {
    width: 30px;
}

/* Nav Controls */
.nav__controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    background-color: var(--color-surface);
    border-radius: var(--border-radius-xl);
    padding: 3px;
    border: 1px solid var(--color-border-light);
}

.lang-switcher__btn {
    padding: 0.35rem 0.7rem;
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--border-radius-xl);
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

.lang-switcher__btn--active {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--color-primary-glow);
}

.lang-switcher__btn:hover:not(.lang-switcher__btn--active) {
    color: var(--color-text);
}

/* Theme Toggle */
.theme-toggle {
    position: relative;
    width: 42px;
    height: 42px;
    border: 1px solid var(--color-border-light);
    background: var(--color-surface);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.theme-toggle__icon {
    width: 20px;
    height: 20px;
    position: absolute;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

[data-theme="dark"] .theme-toggle__icon--sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle__icon--moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

.theme-toggle__icon--sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.theme-toggle__icon--moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle__bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-toggle--open .mobile-toggle__bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle--open .mobile-toggle__bar:nth-child(2) {
    opacity: 0;
}

.mobile-toggle--open .mobile-toggle__bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================ */
/* SECTIONS                                     */
/* ============================================ */
.main {
    position: relative;
    z-index: 2;
}

.section {
    min-height: 100vh;
    padding: calc(var(--navbar-height) + 3rem) 2rem 4rem;
    display: flex;
    align-items: center;
    position: relative;
}

.section--home {
    min-height: 100vh;
    padding-top: 0;
    overflow: hidden;
}

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

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

.section--contact {
    background-color: var(--color-bg-alt);
    min-height: auto;
    padding-bottom: 6rem;
}

.section__content {
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
}

.section__heading {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.section__heading-underline {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-light));
    margin: 0 auto 3rem;
    border-radius: 2px;
}

/* ============================================ */
/* HOME SECTION                                 */
/* ============================================ */
.section__parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.geometric-pattern {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cpath d='M100,10 L120,60 L170,70 L130,110 L140,160 L100,130 L60,160 L70,110 L30,70 L80,60 Z' fill='none' stroke='%23f4b400' stroke-width='0.3' opacity='0.08'/%3E%3C/svg%3E");
    opacity: 0.15;
    animation: patternRotate 120s linear infinite;
}

@keyframes patternRotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.home-content {
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    gap: 1.5rem;
}

.home-content__name {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.2;
    animation: nameFloat 6s ease-in-out infinite;
}

@keyframes nameFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    25% {
        transform: translateY(-8px);
    }

    75% {
        transform: translateY(4px);
    }
}

.gradient-text {
    background: linear-gradient(135deg,
            var(--color-primary-dark) 0%,
            var(--color-primary) 30%,
            var(--color-primary-light) 50%,
            var(--color-primary) 70%,
            var(--color-primary-dark) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.home-content__ayah-wrapper {
    max-width: 650px;
    padding: 2.5rem;
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    transition: all var(--transition-base);
    cursor: default;
}

.home-content__ayah-wrapper:active {
    transform: scale(0.98);
}

.home-content__ayah-decoration {
    margin-bottom: 1rem;
}

.home-content__ayah {
    font-family: var(--font-nastaliq);
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    line-height: 2;
    color: var(--color-text);
    direction: rtl;
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
}

.home-content__ayah-reference {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-family: var(--font-serif);
    font-style: italic;
}

.home-content__scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: scrollBounce 2s ease-in-out infinite;
}

.home-content__scroll-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.home-content__scroll-arrow {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(10px);
    }
}

/* ============================================ */
/* ABOUT SECTION                                */
/* ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

.about-grid__image-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-grid__image-frame {
    position: absolute;
    width: 280px;
    height: 280px;
    pointer-events: none;
}

.about-grid__image-frame svg {
    width: 100%;
    height: 100%;
    animation: frameGlow 3s ease-in-out infinite;
}

@keyframes frameGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 8px var(--color-primary-glow));
    }

    50% {
        filter: drop-shadow(0 0 20px var(--color-primary-glow));
    }
}

.about-grid__image {
    width: 250px;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    box-shadow: 0 20px 60px var(--color-shadow-lg);
    transition: transform var(--transition-base);
    position: relative;
    z-index: 1;
}

.about-grid__image:hover {
    transform: scale(1.03);
}

.about-grid__bio-text {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--color-text-secondary);
}

/* ============================================ */
/* BOOKS SECTION - RESPONSIVE GRID              */
/* ============================================ */
.books-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 1rem 0;
}

.book-card {
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-spring);
    cursor: pointer;
    position: relative;
    opacity: 0;
    transform: translateY(40px);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px var(--color-shadow-sm);
    width: 100%;
}

.book-card--visible {
    opacity: 1;
    transform: translateY(0);
}

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px var(--color-shadow-lg);
    border-color: var(--color-primary);
}

.book-card__image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    background-color: var(--color-surface);
}

.book-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.book-card:hover .book-card__image {
    transform: scale(1.08);
}

.book-card__skeleton {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            var(--color-surface) 25%,
            var(--color-surface-hover) 50%,
            var(--color-surface) 75%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite;
}

@keyframes skeletonShimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.book-card__info {
    padding: 1.25rem;
}

.book-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    line-height: 1.4;
    text-align: center;
}

.book-card__actions {
    display: flex;
    gap: 0.5rem;
}

.btn {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    text-align: center;
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn--filled {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

.btn--filled:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: 0 8px 25px var(--color-primary-glow);
    transform: translateY(-2px);
}

.btn:active {
    transform: scale(0.95) !important;
}

.btn__icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ============================================ */
/* CONTACT SECTION                              */
/* ============================================ */
.contact-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--color-text);
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-spring);
    min-width: 140px;
    position: relative;
    overflow: hidden;
}

.contact-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: inherit;
    z-index: 0;
}

.contact-link:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px var(--color-shadow-lg);
    border-color: var(--color-primary);
}

.contact-link:hover::before {
    opacity: 0.05;
}

.contact-link:hover .contact-link__icon {
    color: var(--color-primary);
    transform: scale(1.2);
}

.contact-link__icon {
    width: 40px;
    height: 40px;
    transition: all var(--transition-spring);
    position: relative;
    z-index: 1;
    color: var(--color-text-secondary);
}

.contact-link__label {
    font-weight: 600;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* Ripple Effect for Contact Links */
.contact-link .ripple {
    position: absolute;
    border-radius: 50%;
    background: var(--color-primary-glow);
    transform: scale(0);
    animation: rippleEffect 0.6s linear;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ============================================ */
/* FOOTER                                       */
/* ============================================ */
.footer {
    position: relative;
    z-index: 2;
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--color-border-light);
    background-color: var(--color-bg);
}

.footer__content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer__text--brand {
    font-family: var(--font-nastaliq);
    color: var(--color-primary);
    font-size: 0.9rem;
}

/* ============================================ */
/* MODAL (PDF READER)                           */
/* ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-base);
}

.modal--open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-overlay);
    cursor: pointer;
}

.modal__content {
    position: relative;
    width: 95%;
    max-width: 1000px;
    height: 90vh;
    background-color: var(--color-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 40px 100px var(--color-shadow-xl);
    z-index: 1;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal--open .modal__content {
    transform: scale(1) translateY(0);
}

.modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-surface);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.modal__close:hover {
    background-color: #e74c3c;
    color: white;
}

.modal__close svg {
    width: 20px;
    height: 20px;
}

.modal__iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ============================================ */
/* TOAST NOTIFICATION                           */
/* ============================================ */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--color-surface);
    color: var(--color-text);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 40px var(--color-shadow-lg);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 10003;
    transform: translateY(120px);
    opacity: 0;
    transition: all var(--transition-spring);
}

.toast--visible {
    transform: translateY(0);
    opacity: 1;
}

.toast__icon {
    width: 20px;
    height: 20px;
    color: #27ae60;
    flex-shrink: 0;
}

.toast__text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================ */
/* CELEBRATION (EASTER EGG)                     */
/* ============================================ */
.celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10004;
}

.celebration-star {
    position: absolute;
    animation: starFall 2s ease-out forwards;
}

@keyframes starFall {
    0% {
        opacity: 1;
        transform: translateY(-100px) rotate(0deg) scale(1);
    }

    100% {
        opacity: 0;
        transform: translateY(100vh) rotate(720deg) scale(0);
    }
}

/* ============================================ */
/* RESPONSIVE DESIGN                            */
/* ============================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-grid__image-wrapper {
        order: -1;
    }

    /* 3 columns on smaller desktop */
    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav__list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-glass-bg);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        justify-content: center;
        gap: 1rem;
        transition: right var(--transition-base);
        box-shadow: -10px 0 40px var(--color-shadow-lg);
        border-left: 1px solid var(--color-glass-border);
    }

    .nav__list--open {
        right: 0;
    }

    .mobile-toggle {
        display: flex;
    }

    .nav__link {
        font-size: 1.1rem;
        padding: 0.75rem 1.5rem;
    }

    .lang-switcher {
        gap: 0;
    }

    .lang-switcher__btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
    }

    /* 2 columns on tablet */
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    /* Stack buttons vertically on tablet */
    .book-card__actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn {
        flex: none;
        width: 100%;
        padding: 0.65rem 0.75rem;
    }

    .contact-links {
        gap: 1rem;
    }

    .contact-link {
        padding: 1.5rem;
        min-width: 110px;
    }

    .section__heading {
        font-size: 1.6rem;
    }

    .home-content__ayah-wrapper {
        padding: 1.5rem;
        margin: 0 1rem;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 0 1rem;
    }

    .nav__brand-text {
        font-size: 1.1rem;
    }

    /* 1 column on mobile - full width */
    .books-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .book-card__info {
        padding: 1rem;
    }

    .book-card__title {
        font-size: 0.95rem;
    }

    /* Stack buttons vertically on mobile */
    .book-card__actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn {
        flex: none;
        width: 100%;
        padding: 0.6rem 0.75rem;
        font-size: 0.8rem;
    }

    .contact-links {
        flex-direction: column;
        gap: 1rem;
    }

    .contact-link {
        flex-direction: row;
        width: 100%;
        padding: 1rem 1.5rem;
        min-width: auto;
    }

    .section {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .home-content__ayah {
        font-size: 1.2rem;
    }

    .toast {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
}

/* ============================================ */
/* RTL SUPPORT (Using Logical Properties)        */
/* ============================================ */
[dir="rtl"] .nav__link--active::after {
    left: auto;
    right: 50%;
    transform: translateX(50%);
}

[dir="rtl"] .btn::before {
    left: auto;
    right: -100%;
}

[dir="rtl"] .btn:hover::before {
    left: auto;
    right: 100%;
}

[dir="rtl"] .modal__close {
    right: auto;
    left: 1rem;
}

[dir="rtl"] .toast {
    right: auto;
    left: 2rem;
}

[dir="rtl"] .mobile-toggle {
    margin-left: 0;
}

[dir="rtl"] .nav__list {
    right: auto;
    left: -100%;
}

[dir="rtl"] .nav__list--open {
    right: auto;
    left: 0;
}

@media (max-width: 768px) {
    [dir="rtl"] .nav__list {
        right: auto;
        left: -100%;
        border-left: none;
        border-right: 1px solid var(--color-glass-border);
        box-shadow: 10px 0 40px var(--color-shadow-lg);
    }

    [dir="rtl"] .nav__list--open {
        left: 0;
    }
}

/* ============================================ */
/* ACCESSIBILITY - FOCUS STYLES                 */
/* ============================================ */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}