/* f:\dev\static_websites\kaarn\css\style.css */

/* ============================================
   DESIGN TOKENS
   ============================================ */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600&display=swap");

:root {
    /* Colors – Green palette */
    --green-900: #0d3b0d;
    --green-800: #1b5e20;
    --green-700: #2e7d32;
    --green-600: #388e3c;
    --green-500: #43a047;
    --green-400: #66bb6a;
    --green-300: #81c784;
    --green-200: #a5d6a7;
    --green-100: #c8e6c9;
    --green-50: #e8f5e9;

    /* Accent */
    --gold: #ffd700;
    --gold-dark: #d4a800;
    --gold-light: #ffe44d;

    /* Neutrals */
    --white: #ffffff;
    --off-white: #f8faf8;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --dark: #1a1a2e;

    /* Functional */
    --success: #4caf50;
    --error: #f44336;
    --info: #2196f3;

    /* Typography */
    --font-heading: "Poppins", sans-serif;
    --font-body: "Inter", sans-serif;

    /* Spacing */
    --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;

    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 30px rgba(46, 125, 50, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --max-width: 1200px;
    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    background: var(--off-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul,
ol {
    list-style: none;
}

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

button,
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

/* ============================================
   UTILITY
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--green-600), var(--gold));
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: var(--space-lg) auto 0;
}

.highlight {
    color: var(--green-700);
}

.highlight-gold {
    color: var(--gold-dark);
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.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 ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(46, 125, 50, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--green-700);
    border-color: var(--green-700);
}

.btn-secondary:hover {
    background: var(--green-700);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--gray-900);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 215, 0, 0.4);
}

.btn-whatsapp {
    background: #25d366;
    color: var(--white);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background: #1da851;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--green-800);
    text-decoration: none;
}

.nav-logo .logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--white);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(46, 125, 50, 0.25);
}

.nav-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.nav-logo .logo-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--green-800);
    letter-spacing: -0.5px;
}

.nav-logo .logo-dot {
    color: var(--gold-dark);
    font-weight: 800;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: var(--space-xs) 0;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--green-600), var(--gold));
    transition: width var(--transition-normal);
    border-radius: 1px;
}

.nav-links a:hover {
    color: var(--green-700);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--green-700);
    font-weight: 600;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--green-800);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    position: relative;
    overflow: visible;
    background: linear-gradient(135deg,
            var(--green-50) 0%,
            var(--white) 50%,
            var(--green-100) 100%);
}

.hero::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 160%;
    background: radial-gradient(ellipse,
            rgba(46, 125, 50, 0.06) 0%,
            transparent 70%);
    animation: heroFloat 15s ease-in-out infinite;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -20%;
    left: -20%;
    width: 50%;
    height: 80%;
    background: radial-gradient(ellipse,
            rgba(255, 215, 0, 0.05) 0%,
            transparent 70%);
    animation: heroFloat 20s ease-in-out infinite reverse;
}

@keyframes heroFloat {

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

    50% {
        transform: translate(30px, -30px);
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: linear-gradient(135deg, var(--green-50), var(--green-100));
    border: 1px solid var(--green-200);
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--green-800);
    margin-bottom: var(--space-lg);
}

.hero-badge .pulse {
    width: 8px;
    height: 8px;
    background: var(--green-500);
    border-radius: var(--radius-full);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

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

    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero h1 span {
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 .gold-text {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text {
    font-size: 1.15rem;
    color: var(--gray-600);
    margin-bottom: var(--space-xl);
    max-width: 520px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

/* Countdown timer */
.countdown {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.countdown-item {
    text-align: center;
    background: var(--white);
    border: 1px solid var(--green-100);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    min-width: 80px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

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

.countdown-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.countdown-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

/* Hero visual side */
.hero-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    animation: fadeInRight 1s ease 0.3s both;
}

.hero-illustration {
    width: 100%;
    max-width: 500px;
    position: relative;
}

.hero-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--green-100);
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            var(--green-600),
            var(--gold),
            var(--green-400));
}

.hero-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    background: linear-gradient(135deg, var(--green-100), var(--green-50));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.hero-card h3 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: var(--space-md);
    color: var(--green-800);
}

.hero-card p {
    text-align: center;
    color: var(--gray-600);
    font-size: 0.95rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.hero-stat {
    text-align: center;
    padding: var(--space-md);
    background: var(--green-50);
    border-radius: var(--radius-md);
}

.hero-stat .stat-number {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--green-700);
}

.hero-stat .stat-label {
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-top: 2px;
}

/* Floating elements around hero */
.floating-element {
    position: absolute;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
    z-index: 2;
}

.floating-element-1 {
    top: 10%;
    right: -10%;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    animation-delay: 0s;
}

.floating-element-2 {
    bottom: 20%;
    right: -5%;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--green-400), var(--green-300));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    animation-delay: 2s;
}

.floating-element-3 {
    top: 30%;
    left: -8%;
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--green-600), var(--green-700));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    animation-delay: 4s;
}

@keyframes float {

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

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
    background: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.benefit-card {
    background: var(--off-white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green-500), var(--gold));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200);
}

.benefit-card:hover::before {
    transform: scaleX(1);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--space-lg);
    background: linear-gradient(135deg, var(--green-100), var(--green-50));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transition: all var(--transition-normal);
}

.benefit-card:hover .benefit-icon {
    background: linear-gradient(135deg, var(--green-600), var(--green-500));
    transform: scale(1.1);
}

.benefit-card:hover .benefit-icon svg {
    fill: var(--white);
}

.benefit-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    color: var(--green-800);
}

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

/* ============================================
   WHY CHEMISTRY SECTION
   ============================================ */
.why-section {
    background: linear-gradient(135deg,
            var(--green-800) 0%,
            var(--green-900) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.why-section::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: radial-gradient(ellipse at top right,
            rgba(255, 215, 0, 0.1) 0%,
            transparent 70%);
}

.why-section .section-header h2 {
    color: var(--white);
}

.why-section .section-header p {
    color: var(--green-200);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.why-content ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.why-content li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    font-size: 1.05rem;
    color: var(--green-100);
}

.why-content li .check-icon {
    width: 28px;
    height: 28px;
    min-width: 28px;
    background: rgba(255, 215, 0, 0.15);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    font-size: 0.8rem;
    margin-top: 2px;
}

.why-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.why-card h3 {
    color: var(--gold);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.why-card .target-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.why-card .target-item:last-child {
    border-bottom: none;
}

.target-icon {
    width: 45px;
    height: 45px;
    min-width: 45px;
    background: linear-gradient(135deg, var(--green-500), var(--green-400));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.target-info h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 2px;
}

.target-info p {
    color: var(--green-300);
    font-size: 0.85rem;
}

/* ============================================
   COURSES SECTION
   ============================================ */
.courses-preview {
    background: var(--off-white);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.course-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
    position: relative;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.course-card-header {
    padding: var(--space-2xl) var(--space-xl) var(--space-xl);
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    color: var(--white);
    position: relative;
}

.course-card-header::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 30px;
    background: var(--white);
    clip-path: ellipse(55% 100% at 50% 100%);
}

.course-card-header .course-icon {
    width: 55px;
    height: 55px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.course-card-header h3 {
    color: var(--white);
    font-size: 1.3rem;
}

.course-card-header .course-tag {
    display: inline-block;
    background: rgba(255, 215, 0, 0.2);
    color: var(--gold-light);
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: var(--space-sm);
}

.course-card-body {
    padding: var(--space-xl);
}

.course-card-body ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.course-card-body li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--gray-700);
}

.course-card-body li svg {
    width: 18px;
    height: 18px;
    min-width: 18px;
    fill: var(--green-500);
}

.course-card-body .btn {
    width: 100%;
    justify-content: center;
}

/* Featured card variant */
.course-card.featured {
    border-color: var(--gold);
    box-shadow: 0 0 0 1px var(--gold), var(--shadow-md);
}

.course-card.featured .course-card-header {
    background: linear-gradient(135deg, var(--green-800), var(--green-600));
}

.course-card.featured::after {
    content: "POPULAR";
    position: absolute;
    top: 16px;
    right: -30px;
    background: var(--gold);
    color: var(--gray-900);
    padding: 4px 40px;
    font-size: 0.7rem;
    font-weight: 700;
    transform: rotate(45deg);
    z-index: 1;
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
    background: linear-gradient(135deg,
            var(--green-700) 0%,
            var(--green-600) 50%,
            var(--green-500) 100%);
    padding: var(--space-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%,
            rgba(255, 215, 0, 0.1) 0%,
            transparent 50%);
}

.cta-banner h2 {
    color: var(--white);
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.cta-banner p {
    color: var(--green-100);
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 1;
}

.cta-banner .btn {
    position: relative;
    z-index: 1;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

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

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: var(--space-sm);
}

.contact-info>p {
    color: var(--gray-600);
    font-size: 1.05rem;
    line-height: 1.7;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: linear-gradient(135deg, var(--green-100), var(--green-50));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: all var(--transition-normal);
}

.contact-item:hover .contact-item-icon {
    background: linear-gradient(135deg, var(--green-600), var(--green-500));
    transform: scale(1.1);
}

.contact-item h4 {
    font-size: 1rem;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.contact-item p,
.contact-item a {
    font-size: 0.95rem;
    color: var(--gray-600);
}

.contact-item a:hover {
    color: var(--green-700);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--off-white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
}

.form-group label .required {
    color: var(--error);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-800);
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--green-500);
    box-shadow: 0 0 0 3px rgba(67, 160, 71, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23757575' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.form-submit {
    margin-top: var(--space-sm);
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--space-xl);
    background: var(--green-50);
    border: 1px solid var(--green-200);
    border-radius: var(--radius-md);
}

.form-success.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

.form-success .success-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.form-success h3 {
    color: var(--green-700);
    margin-bottom: var(--space-sm);
}

.form-success p {
    color: var(--gray-600);
}

.form-error {
    color: var(--error);
    font-size: 0.8rem;
    display: none;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
}

.form-group.error .form-error {
    display: block;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .nav-logo {
    margin-bottom: var(--space-md);
}

.footer-brand .nav-logo .logo-icon {
    background: linear-gradient(135deg, var(--green-500), var(--green-400));
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--gray-500);
    margin-bottom: var(--space-lg);
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-normal);
    font-size: 1.1rem;
}

.footer-social a:hover {
    background: var(--green-700);
    border-color: var(--green-700);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: var(--space-lg);
    font-family: var(--font-heading);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col a {
    color: var(--gray-500);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.footer-col a:hover {
    color: var(--green-400);
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

.footer-contact-item span:first-child {
    font-size: 1.1rem;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--green-400);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.page-hero {
    padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
    background: linear-gradient(135deg, var(--green-50) 0%, var(--white) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: radial-gradient(ellipse,
            rgba(46, 125, 50, 0.05) 0%,
            transparent 70%);
}

.page-hero h1 {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.page-hero p {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    font-size: 0.9rem;
    color: var(--gray-500);
}

.breadcrumb a {
    color: var(--green-600);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* About content */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--green-800);
}

.about-text p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    font-size: 1.05rem;
}

.about-visual {
    position: relative;
}

.about-image-card {
    background: linear-gradient(135deg, var(--green-100), var(--green-50));
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    border: 1px solid var(--green-200);
}

.about-image-card .big-icon {
    font-size: 6rem;
    margin-bottom: var(--space-lg);
}

.about-image-card h3 {
    color: var(--green-800);
    margin-bottom: var(--space-sm);
}

.about-image-card p {
    color: var(--gray-600);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.value-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--green-200);
}

.value-card .value-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.value-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    color: var(--green-800);
}

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

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--space-2xl);
}

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--green-600), var(--gold));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-2xl);
    padding-left: var(--space-lg);
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: calc(-1 * var(--space-2xl) - 6px);
    top: 6px;
    width: 15px;
    height: 15px;
    background: var(--green-600);
    border: 3px solid var(--white);
    border-radius: var(--radius-full);
    box-shadow: 0 0 0 3px var(--green-200);
}

.timeline-item h4 {
    font-size: 1.1rem;
    color: var(--green-800);
    margin-bottom: var(--space-xs);
}

.timeline-item .timeline-year {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gold-dark);
    margin-bottom: var(--space-sm);
}

.timeline-item p {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============================================
   COURSES PAGE
   ============================================ */
.courses-detail .course-detail-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    margin-bottom: var(--space-2xl);
    transition: all var(--transition-normal);
}

.courses-detail .course-detail-card:hover {
    box-shadow: var(--shadow-md);
}

.course-detail-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.course-detail-info {
    padding: var(--space-2xl);
}

.course-detail-info h3 {
    font-size: 1.6rem;
    margin-bottom: var(--space-md);
    color: var(--green-800);
}

.course-detail-info p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.course-detail-meta {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.course-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    color: var(--gray-600);
}

.course-meta-item strong {
    color: var(--gray-800);
}

.course-detail-visual {
    background: linear-gradient(135deg, var(--green-600), var(--green-800));
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
}

.course-detail-visual .course-big-icon {
    font-size: 5rem;
    opacity: 0.9;
}

.course-topics {
    padding: var(--space-xl) var(--space-2xl) var(--space-2xl);
    border-top: 1px solid var(--gray-100);
}

.course-topics h4 {
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--gray-800);
}

.topics-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm) var(--space-xl);
}

.topics-list li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--gray-600);
    padding: var(--space-xs) 0;
}

.topics-list li::before {
    content: "✓";
    color: var(--green-500);
    font-weight: 700;
}

/* Demo banner */
.demo-banner {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-3xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.demo-banner-content h3 {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.demo-banner-content p {
    color: var(--gray-800);
    font-size: 1rem;
}

.demo-banner .btn {
    white-space: nowrap;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

/* Form error banner (submit failure fallback) */
.form-error-banner {
    background: #fff3e0;
    border: 1px solid #ffb74d;
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.3s ease;
}

.form-error-banner p {
    color: #e65100;
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.6;
}

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

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-text {
        margin: 0 auto var(--space-xl);
    }

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

    .countdown {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

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

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

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

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

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

    .course-detail-top {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .page-hero h1 {
        font-size: 2.2rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: calc(var(--nav-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-normal);
        z-index: 999;
        gap: var(--space-lg);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-cta {
        margin-left: 0;
        width: 100%;
    }

    .nav-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .nav-toggle {
        display: flex;
    }

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

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .countdown {
        flex-wrap: wrap;
    }

    .countdown-item {
        min-width: 65px;
        padding: var(--space-sm) var(--space-md);
    }

    .countdown-number {
        font-size: 1.5rem;
    }

    .demo-banner {
        flex-direction: column;
        text-align: center;
        padding: var(--space-xl);
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .topics-list {
        grid-template-columns: 1fr;
    }

    .cta-banner h2 {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 14px 30px;
        font-size: 1rem;
    }

    .section {
        padding: var(--space-2xl) 0;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .page-hero h1 {
        font-size: 1.8rem;
    }
}

/* ============================================
   OVERLAY (mobile nav)
   ============================================ */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 998;
}

.nav-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   SCROLL TO TOP
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    z-index: 900;
    border: none;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

/* ============================================
   CONTACT FAB
   ============================================ */
.contact-fab {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(46, 125, 50, 0.35);
    z-index: 900;
    transition: all var(--transition-normal);
    animation: fabPulse 3s ease-in-out infinite;
}

.contact-fab:hover {
    transform: scale(1.1) translateY(-4px);
    box-shadow: 0 6px 24px rgba(46, 125, 50, 0.5);
}

@keyframes fabPulse {

    0%,
    100% {
        box-shadow: 0 4px 16px rgba(46, 125, 50, 0.35);
    }

    50% {
        box-shadow: 0 4px 24px rgba(46, 125, 50, 0.55);
    }
}