/* =============================================
   ห้องเรียนครูจุ๊บ วัชระ - Shared Styles
   ============================================= */

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

:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --secondary: #14b8a6;
    --secondary-light: #5eead4;
    --secondary-dark: #0d9488;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gray-950: #030712;
    --orange-500: #f97316;
    --green-500: #22c55e;
    --pink-500: #ec4899;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Prompt', sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

a {
    text-decoration: none;
    color: inherit;
}

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

ul {
    list-style: none;
}

/* === Glassmorphism Navbar === */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: box-shadow var(--transition), background var(--transition);
}

.glass-nav.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.96);
}

.nav-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5rem;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    text-decoration: none;
}

.nav-logo-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transition: transform var(--transition);
}

.nav-logo:hover .nav-logo-icon {
    transform: scale(1.08);
}

.nav-logo-text {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--gray-800);
}

.nav-logo-text span {
    color: var(--primary-600);
}

/* Desktop Nav */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray-600);
    transition: all var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

.nav-link.active {
    color: var(--primary-600);
    background: var(--primary-50);
    font-weight: 600;
}

.nav-link-cta {
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white !important;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transition: all var(--transition);
}

.nav-link-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.mobile-menu-btn:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

/* Mobile menu panel */
.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid var(--gray-100);
    box-shadow: var(--shadow-xl);
    padding: 0.5rem 1rem 1.5rem;
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.25s ease;
}

.mobile-menu.open {
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav-link {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--primary-50);
    color: var(--primary-600);
}

.mobile-nav-cta {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: white;
    background: var(--primary-600);
    text-align: center;
    margin-top: 0.75rem;
    transition: all var(--transition);
}

.mobile-nav-cta:hover {
    background: var(--primary-700);
}

/* === Hero Section === */
.hero {
    position: relative;
    padding: 9rem 0 5rem;
    overflow: hidden;
}

.hero-bg-blob-1 {
    position: absolute;
    top: -10rem;
    right: -10rem;
    width: 30rem;
    height: 30rem;
    border-radius: 50%;
    background: var(--primary-100);
    opacity: 0.5;
    filter: blur(80px);
    z-index: -1;
    animation: blobFloat 8s ease-in-out infinite;
}

.hero-bg-blob-2 {
    position: absolute;
    top: 12rem;
    left: -5rem;
    width: 22rem;
    height: 22rem;
    border-radius: 50%;
    background: var(--secondary);
    opacity: 0.15;
    filter: blur(80px);
    z-index: -1;
    animation: blobFloat 10s ease-in-out infinite reverse;
}

@keyframes blobFloat {

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

    33% {
        transform: translate(20px, -30px) scale(1.05);
    }

    66% {
        transform: translate(-15px, 15px) scale(0.95);
    }
}

.hero-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    background: var(--primary-50);
    color: var(--primary-600);
    font-weight: 500;
    font-size: 0.875rem;
    border: 1px solid var(--primary-100);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.hero-badge-dot {
    position: relative;
    width: 0.625rem;
    height: 0.625rem;
}

.hero-badge-dot::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--primary-400);
    animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.hero-badge-dot::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--primary-500);
}

@keyframes ping {

    75%,
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-image: linear-gradient(135deg, var(--primary-600), var(--secondary));
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 32rem;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--primary-200);
    background: var(--primary-50);
    transform: translateY(-2px);
}

.btn-secondary i {
    color: var(--primary-500);
}

/* Hero Image */
.hero-image-wrapper {
    position: relative;
    max-width: 26rem;
    margin-left: auto;
}

.hero-image {
    width: 100%;
    aspect-ratio: 4/5;
    border-radius: 2.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
}

.hero-image-text {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    color: white;
}

.hero-image-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.hero-image-text p {
    font-size: 0.875rem;
    color: #d1d5db;
}

.hero-floating-badge {
    position: absolute;
    bottom: -1.5rem;
    left: -1.5rem;
    background: white;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: floatBadge 4s ease-in-out infinite;
}

@keyframes floatBadge {

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

    50% {
        transform: translateY(-8px);
    }
}

.hero-floating-badge .badge-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: #dcfce7;
    color: #16a34a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.hero-floating-badge .badge-text p:first-child {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
}

.hero-floating-badge .badge-text p:last-child {
    font-weight: 700;
    color: var(--gray-800);
}

/* === Quick Access Cards === */
.quick-section {
    padding: 4rem 0;
    background: white;
    position: relative;
    z-index: 10;
}

.quick-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: -7rem;
}

.quick-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: 2rem;
    border: 1px solid var(--gray-100);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    transition: all 0.4s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.quick-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.quick-card:nth-child(1):hover {
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.12);
}

.quick-card:nth-child(2):hover {
    box-shadow: 0 12px 30px rgba(20, 184, 166, 0.12);
}

.quick-card:nth-child(3):hover {
    box-shadow: 0 12px 30px rgba(249, 115, 22, 0.12);
}

.quick-card-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all var(--transition);
}

.quick-card:nth-child(1) .quick-card-icon {
    background: var(--primary-50);
    color: var(--primary-600);
}

.quick-card:nth-child(2) .quick-card-icon {
    background: #ccfbf1;
    color: var(--secondary);
}

.quick-card:nth-child(3) .quick-card-icon {
    background: #fff7ed;
    color: var(--orange-500);
}

.quick-card:hover:nth-child(1) .quick-card-icon {
    background: var(--primary-600);
    color: white;
}

.quick-card:hover:nth-child(2) .quick-card-icon {
    background: var(--secondary);
    color: white;
}

.quick-card:hover:nth-child(3) .quick-card-icon {
    background: var(--orange-500);
    color: white;
}

.quick-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
}

.quick-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.quick-card-link {
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: gap var(--transition);
}

.quick-card:nth-child(1) .quick-card-link {
    color: var(--primary-600);
}

.quick-card:nth-child(2) .quick-card-link {
    color: var(--secondary);
}

.quick-card:nth-child(3) .quick-card-link {
    color: var(--orange-500);
}

.quick-card:hover .quick-card-link {
    gap: 0.625rem;
}

/* === Page Header === */
.page-header {
    text-align: center;
    max-width: 40rem;
    margin: 0 auto 3.5rem;
}

.page-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.page-header-bar {
    width: 4rem;
    height: 4px;
    border-radius: var(--radius-full);
    margin: 0 auto 1.25rem;
}

.page-header-bar.blue {
    background: var(--primary-500);
}

.page-header-bar.teal {
    background: var(--secondary);
}

.page-header p {
    color: var(--gray-600);
    font-size: 1.05rem;
}

/* === About Page === */
.about-section {
    padding: 9rem 0 5rem;
    min-height: 100vh;
}

.about-card {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.about-inner {
    background: white;
    border-radius: var(--radius-3xl);
    padding: 3rem;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3.5rem;
    align-items: start;
}

.about-photo-side {
    text-align: center;
}

.about-photo {
    width: 12rem;
    height: 12rem;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1.5rem;
    border: 4px solid white;
    box-shadow: var(--shadow-xl);
}

.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
}

.about-nickname {
    color: var(--primary-600);
    font-weight: 500;
    margin-bottom: 1rem;
}

.about-socials {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.about-social-link {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.about-social-link.facebook {
    background: #eff6ff;
    color: #2563eb;
}

.about-social-link.facebook:hover {
    background: #2563eb;
    color: white;
}

.about-social-link.email {
    background: #fef2f2;
    color: #dc2626;
}

.about-social-link.email:hover {
    background: #dc2626;
    color: white;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-block h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-block h4 i.teal {
    color: var(--secondary);
}

.about-block h4 i.blue {
    color: var(--primary-500);
}

.about-block h4 i.orange {
    color: var(--orange-500);
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--gray-600);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.about-list .dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    margin-top: 0.55rem;
    flex-shrink: 0;
}

.dot.teal {
    background: var(--secondary);
}

.dot.blue {
    background: var(--primary-500);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.5rem 1.25rem;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--gray-700);
    transition: all var(--transition);
}

.skill-tag:hover {
    background: var(--primary-50);
    color: var(--primary-600);
}

/* === Materials Page === */
.materials-section {
    padding: 9rem 0 5rem;
    background: var(--gray-50);
    min-height: 100vh;
}

.materials-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.subject-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
}

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

.subject-card-img {
    height: 12rem;
    overflow: hidden;
    position: relative;
}

.subject-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.subject-card:hover .subject-card-img img {
    transform: scale(1.1);
}

.subject-card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.subject-card-badge.blue {
    color: var(--primary-600);
}

.subject-card-badge.teal {
    color: var(--secondary);
}

.subject-card-badge.pink {
    color: var(--pink-500);
}

.subject-card-body {
    padding: 1.5rem;
}

.subject-card-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.subject-card-body p {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.subject-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--gray-100);
    padding-top: 1rem;
}

.subject-card-footer span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.subject-card-btn {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-600);
    background: var(--primary-50);
    padding: 0.375rem 1rem;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.subject-card-btn:hover {
    background: var(--primary-600);
    color: white;
}

/* === Portfolio Page === */
.portfolio-section {
    padding: 9rem 0 5rem;
    background: white;
    min-height: 100vh;
}

.portfolio-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.portfolio-header {
    margin-bottom: 3rem;
}

.portfolio-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.portfolio-header .bar {
    width: 4rem;
    height: 4px;
    border-radius: var(--radius-full);
    background: var(--secondary);
    margin-bottom: 1rem;
}

.portfolio-header p {
    color: var(--gray-600);
    font-size: 1.05rem;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 1.25rem;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    min-height: 220px;
}

.portfolio-item.large {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 400px;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.portfolio-item:hover img {
    transform: scale(1.06);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.portfolio-item.large .portfolio-overlay {
    opacity: 0.8;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    transform: translateY(8px);
    transition: all 0.4s ease;
    opacity: 0;
}

.portfolio-item.large .portfolio-info {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-item:hover .portfolio-info {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-badge {
    display: inline-block;
    background: rgba(20, 184, 166, 0.9);
    color: white;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.5rem;
}

.portfolio-info h3 {
    color: white;
    font-weight: 700;
}

.portfolio-item.large .portfolio-info h3 {
    font-size: 1.25rem;
}

.portfolio-info h3 {
    font-size: 0.9rem;
}

.portfolio-info p {
    color: #d1d5db;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.portfolio-view-all {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    color: var(--primary-600);
    transition: all var(--transition);
    cursor: pointer;
    border-radius: var(--radius-2xl);
    min-height: 220px;
}

.portfolio-view-all:hover {
    background: var(--primary-50);
}

.portfolio-view-all .icon-circle {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: white;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.portfolio-view-all span {
    font-weight: 600;
    font-size: 0.9rem;
}

/* === Contact Page === */
.contact-section {
    padding: 9rem 0 5rem;
    background: var(--gray-900);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.contact-blob-1 {
    position: absolute;
    top: 0;
    right: 0;
    width: 20rem;
    height: 20rem;
    border-radius: 50%;
    background: var(--primary-600);
    filter: blur(100px);
    opacity: 0.2;
    animation: blobFloat 12s ease-in-out infinite;
}

.contact-blob-2 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 20rem;
    height: 20rem;
    border-radius: 50%;
    background: var(--secondary);
    filter: blur(100px);
    opacity: 0.2;
    animation: blobFloat 12s ease-in-out infinite reverse;
}

.contact-container {
    max-width: 48rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 10;
    text-align: center;
    width: 100%;
}

.contact-container h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
}

.contact-container>p {
    color: var(--gray-300);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    line-height: 1.75;
}

.contact-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    text-decoration: none;
    cursor: pointer;
    border: none;
}

.contact-btn.messenger {
    background: var(--primary-600);
    color: white;
}

.contact-btn.messenger:hover {
    background: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.contact-btn.line {
    background: #00B900;
    color: white;
}

.contact-btn.line:hover {
    background: #00a000;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 185, 0, 0.3);
}

.contact-btn.email-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-btn.email-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.contact-btn i {
    font-size: 1.25rem;
}

/* === Footer (Compact) === */
.footer {
    background: var(--gray-950);
    color: var(--gray-400);
    padding: 1.25rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-left .footer-icon {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.7rem;
    flex-shrink: 0;
}

.footer-left span {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.footer-left span strong {
    color: white;
    font-weight: 600;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.footer-links a {
    font-size: 0.8rem;
    color: var(--gray-400);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--primary-400);
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
}

.footer-right .visitor-count {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--gray-500);
}

.footer-right .visitor-count i {
    color: var(--secondary);
    font-size: 0.7rem;
}

.footer-right .visitor-count span {
    font-weight: 600;
    color: var(--secondary-light);
}


/* === Animations === */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(24px);
    animation-play-state: paused;
}

.fade-in-up.visible {
    animation-play-state: running;
}

.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-image-wrapper {
        max-width: 20rem;
        margin: 2rem auto 0;
    }

    .quick-grid {
        grid-template-columns: 1fr;
        margin-top: -4rem;
    }

    .about-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-list li {
        justify-content: center;
    }

    .skill-tags {
        justify-content: center;
    }

    .materials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-item.large {
        min-height: 300px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .footer-links {
        gap: 0.75rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 7rem 0 3rem;
    }

    .materials-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-item.large {
        min-height: 240px;
    }

    .contact-actions {
        flex-direction: column;
        align-items: center;
    }

    .contact-btn {
        width: 100%;
        max-width: 20rem;
    }
}

@media (max-width: 480px) {
    .hero-floating-badge {
        display: none;
    }

    .portfolio-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .portfolio-item {
        min-height: 160px;
    }

    .portfolio-item.large {
        min-height: 200px;
    }

    .worksheets-grid {
        grid-template-columns: 1fr;
    }

    .worksheet-register {
        flex-direction: column;
        text-align: center;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* === Content Section (สาระสำคัญ) === */
.content-section {
    padding: 4rem 0;
    background: white;
}

.content-container {
    max-width: 60rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.content-box {
    background: linear-gradient(135deg, var(--primary-50), #f0fdf4);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    border-left: 5px solid var(--primary-500);
    line-height: 1.85;
    color: var(--gray-700);
    font-size: 1.05rem;
    box-shadow: var(--shadow-sm);
}

.content-box strong {
    color: var(--primary-600);
}

/* === Stats Section === */
.stats-section {
    padding: 3rem 0 5rem;
    background: white;
}

.stats-container {
    max-width: 60rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: 2rem 1.5rem;
    text-align: center;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
}

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

.stat-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: var(--primary-50);
    color: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin: 0 auto 1rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* === Video Thumbnail Overlay === */
.video-thumb {
    position: relative;
    cursor: pointer;
}

.play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.25);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.subject-card:hover .play-overlay {
    opacity: 1;
}

.play-overlay i {
    font-size: 3.5rem;
    color: white;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.subject-card:hover .play-overlay i {
    transform: scale(1.15);
}

.subject-card-footer a {
    text-decoration: none;
}

/* === Worksheets Page === */
.worksheets-section {
    padding: 9rem 0 5rem;
    background: var(--gray-50);
    min-height: 100vh;
}

.worksheets-container {
    max-width: 60rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Register / Submit Banner */
.worksheet-register {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: white;
    border-radius: var(--radius-2xl);
    padding: 1.5rem 2rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--gray-100);
    border-left: 5px solid var(--primary-500);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.worksheet-register:hover {
    box-shadow: var(--shadow-md);
}

.register-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-xl);
    background: var(--primary-50);
    color: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.register-text {
    flex: 1;
}

.register-text h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.125rem;
}

.register-text p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Worksheets Grid */
.worksheets-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin: 2.5rem 0;
}

.worksheet-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: 1.75rem;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.worksheet-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.worksheet-card:hover::before {
    opacity: 1;
}

.worksheet-number {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.worksheet-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.worksheet-content p {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.5;
}

.worksheet-desc {
    font-size: 0.8rem;
    color: var(--gray-400);
    display: block;
    margin-top: 0.25rem;
}

.worksheet-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition);
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.worksheet-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
}

/* Test Banner */
.test-banner {
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    border-radius: var(--radius-2xl);
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 1rem;
}

.test-banner-content {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.test-banner-icon {
    font-size: 2rem;
    color: var(--secondary-light);
}

.test-banner h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
}

.test-banner p {
    font-size: 0.9rem;
    color: var(--gray-400);
}

/* === Contact Info Cards === */
.contact-info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.contact-info-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all var(--transition);
    backdrop-filter: blur(8px);
}

.contact-info-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.contact-info-card i {
    font-size: 2rem;
    color: var(--secondary-light);
    margin-bottom: 1rem;
    display: block;
}

.contact-info-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
}

.contact-info-card p {
    font-size: 0.875rem;
    color: var(--gray-400);
    line-height: 1.6;
}

/* Responsive - Contact Info Cards */
@media (max-width: 768px) {
    .contact-info-cards {
        grid-template-columns: 1fr;
        max-width: 24rem;
        margin-left: auto;
        margin-right: auto;
    }

    .worksheets-grid {
        grid-template-columns: 1fr;
    }

    .test-banner {
        flex-direction: column;
        text-align: center;
    }

    .test-banner-content {
        flex-direction: column;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}