/* ============================================
   RANKESIRE EDUCATION - LANDING PAGE STYLES
   Mobile-First Responsive Design
   ============================================ */

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-color: #1E40AF;
    --primary-dark: #1E3A8A;
    --primary-light: #3B82F6;
    --primary-lighter: #60A5FA;

    /* Secondary Colors */
    --secondary-color: #F59E0B;
    --secondary-dark: #D97706;

    /* Neutral Colors */
    --white: #FFFFFF;
    --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;

    /* Accent Colors */
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-primary);
    color: var(--gray-800);
    background-color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

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

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

/* ============================================
   LOADING SCREEN
   ============================================ */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: sticky;
    top: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav {
    display: none;
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-base);
}

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

.nav-link-cta {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
}

.nav-link-cta:hover {
    background: var(--primary-dark);
    color: var(--white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

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

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
}

/* ============================================
   STICKY CTA (Mobile)
   ============================================ */

.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: var(--white);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 999;
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.sticky-cta.visible {
    transform: translateY(0);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
    overflow: hidden;
}

.hero-content {
    display: grid;
    gap: var(--spacing-2xl);
}

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

.badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.highlight {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--primary-lighter);
    opacity: 0.3;
    z-index: -1;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat {
    text-align: center;
}

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

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

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.trust-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.trust-text i {
    color: var(--success);
}

.hero-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

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

.hero-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
}

.floating-card {
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.floating-card i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.floating-card p {
    margin: 0;
    font-weight: 600;
    color: var(--gray-800);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 60px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-800);
    border-color: var(--gray-100);
}

.btn-secondary:hover {
    background: var(--gray-200);
    border-color: var(--gray-200);
    color: var(--gray-900);
}

.btn-white {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--white);
}

.btn-white:hover {
    background: var(--gray-100);
    color: var(--primary-dark);
}

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

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* ============================================
   EXAM PAPERS SECTION
   ============================================ */

.exam-papers-section {
    background: var(--gray-50);
}

.download-status {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.status-card {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.status-card i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.status-card p {
    margin: 0;
    font-size: 1rem;
    color: var(--gray-700);
}

.status-card strong {
    color: var(--primary-color);
    font-size: 1.25rem;
}

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

.paper-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.paper-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.paper-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.paper-header i {
    font-size: 2rem;
    color: var(--error);
}

.paper-badge {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-12th {
    background: var(--secondary-color);
}

.paper-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-900);
}

.paper-details {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.paper-details i {
    color: var(--primary-color);
    width: 20px;
}

.download-btn {
    width: 100%;
}

.download-btn:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

/* Download Modal */
.download-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.download-modal.active {
    display: flex;
}

.download-modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gray-100);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--gray-200);
    transform: rotate(90deg);
}

.modal-icon {
    font-size: 3rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.download-modal h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.download-modal p {
    text-align: center;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   SECTION HEADERS
   ============================================ */

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

.section-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-lighter);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   QUIZ SECTION
   ============================================ */

.quiz-section {
    background: var(--gray-50);
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

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

.quiz-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.quiz-start h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.quiz-start p {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

.quiz-features {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.quiz-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.quiz-feature i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.quiz-progress {
    margin-bottom: var(--spacing-2xl);
}

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transition: width var(--transition-base);
    border-radius: var(--radius-full);
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: var(--gray-700);
}

.question-container {
    margin-bottom: var(--spacing-2xl);
}

.question-card {
    animation: fadeIn 0.3s ease;
}

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

.question-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xl);
}

.options-grid {
    display: grid;
    gap: var(--spacing-md);
}

.option-label {
    position: relative;
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.option-label:hover {
    background: var(--primary-lighter);
    border-color: var(--primary-light);
    transform: translateX(5px);
}

.option-label input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.option-label input[type="radio"]:checked ~ .option-text {
    font-weight: 600;
}

.option-label.selected {
    background: var(--primary-lighter);
    border-color: var(--primary-color);
}

.option-radio {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-400);
    border-radius: 50%;
    margin-right: var(--spacing-md);
    position: relative;
    flex-shrink: 0;
}

.option-label.selected .option-radio {
    border-color: var(--primary-color);
}

.option-label.selected .option-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
}

.option-text {
    flex: 1;
    color: var(--gray-800);
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.quiz-results {
    animation: fadeIn 0.5s ease;
}

.results-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.results-icon {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
}

.results-header h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.results-header p {
    color: var(--gray-600);
}

.result-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--white);
}

.result-stream {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.result-match {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.result-description {
    font-size: 1.125rem;
    opacity: 0.95;
    margin-bottom: var(--spacing-lg);
}

.result-details {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.result-details h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.result-details ul {
    list-style: none;
}

.result-details li {
    padding-left: var(--spacing-lg);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.result-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    font-weight: 700;
}

.other-results {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.other-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.other-result-name {
    font-weight: 600;
    color: var(--gray-800);
}

.other-result-score {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.results-cta {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    margin: var(--spacing-2xl) 0;
}

.results-cta-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.results-cta-text i {
    color: var(--secondary-color);
    font-size: 1.5rem;
}

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

.share-results p {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.share-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.share-whatsapp {
    background: #25D366;
    color: var(--white);
}

.share-whatsapp:hover {
    background: #128C7E;
    transform: translateY(-2px);
}

.share-copy {
    background: var(--gray-100);
    color: var(--gray-800);
}

.share-copy:hover {
    background: var(--gray-200);
}

/* ============================================
   BENEFITS SECTION
   ============================================ */

.benefits-grid {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.benefit-card {
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-lighter), var(--primary-light));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.benefit-icon i {
    font-size: 1.75rem;
    color: var(--white);
}

.benefit-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.benefit-card p {
    color: var(--gray-600);
    margin: 0;
}

/* How It Works */
.how-it-works {
    background: var(--gray-50);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-xl);
}

.how-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-2xl);
}

.steps-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.step h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: var(--gray-600);
    margin: 0;
}

.step-arrow {
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials-section {
    background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 100%);
}

.testimonials-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.testimonial-rating i {
    color: var(--secondary-color);
}

.testimonial-text {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-lighter), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    font-size: 1.5rem;
    color: var(--white);
}

.author-info h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.author-info p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

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

.contact-content {
    display: grid;
    gap: var(--spacing-3xl);
}

.contact-features {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.contact-feature {
    display: flex;
    gap: var(--spacing-md);
}

.contact-feature i {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-feature h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.contact-feature p {
    color: var(--gray-600);
    margin: 0;
    font-size: 0.95rem;
}

.contact-form-wrapper {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-group label i {
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.error-message {
    display: block;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
}

.checkbox-group {
    margin-bottom: var(--spacing-xl);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
}

.checkbox-custom {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    position: relative;
    transition: all var(--transition-base);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: 700;
    font-size: 0.875rem;
}

.checkbox-text {
    font-size: 0.95rem;
    color: var(--gray-700);
}

.privacy-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    text-align: center;
    margin-top: var(--spacing-lg);
    line-height: 1.6;
}

.privacy-text i {
    color: var(--success);
}

.success-message {
    text-align: center;
    padding: var(--spacing-3xl);
}

.success-icon {
    font-size: 5rem;
    color: var(--success);
    margin-bottom: var(--spacing-xl);
}

.success-message h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--success);
}

.success-message p {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.success-subtext {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.cta-content h2 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-logo .logo-text {
    color: var(--white);
}

.footer-description {
    color: var(--gray-400);
    margin-bottom: var(--spacing-lg);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-base);
}

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

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-contact i {
    color: var(--primary-light);
}

.footer-contact a {
    color: var(--gray-400);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-md);
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer-bottom-links a:hover {
    color: var(--white);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-2xl);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablets (768px and up) */
@media (min-width: 768px) {
    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.5rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }

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

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

    .quiz-features {
        grid-template-columns: repeat(3, 1fr);
    }

    .steps-grid {
        grid-template-columns: repeat(4, auto) repeat(3, 1fr) auto;
        align-items: center;
    }

    .step-arrow {
        display: flex;
    }

    .cta-buttons {
        flex-direction: row;
        max-width: none;
        justify-content: center;
    }

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

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

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }

    .nav {
        display: flex;
        gap: var(--spacing-sm);
    }

    .hero-content {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }

    .hero-text {
        text-align: left;
    }

    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }

    .trust-text {
        justify-content: flex-start;
    }

    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }

    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }

    .papers-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .section-title {
        font-size: 2.75rem;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus states for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}