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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f172a;
    --accent: #f97316;
    --accent-dark: #ea580c;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-900);
    line-height: 1.6;
    font-size: 16px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== IMAGE STYLES ===== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

.logo img {
    height: 70px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 6px rgba(37, 99, 235, 0.2));
}

.logo span {
    font-size: 2rem;
    font-weight: 800;
    color: var(--secondary);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo img {
    height: 70px;
    width: auto;
    object-fit: contain;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

/* ===== HEADER ===== */
.header {
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 1000;
    border-bottom: 1px solid var(--gray-200);
    width: 100%;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 3px;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-700);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 3rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.btn-white {
    background: white;
    color: var(--primary);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(255, 255, 255, 0.3);
}

.btn-outline-white {
    border: 2px solid white;
    color: white;
    background: transparent;
}

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    border-radius: 3rem;
    font-weight: 600;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 2rem 0 5rem;
    background: linear-gradient(135deg, var(--white), var(--gray-50));
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content-center {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 3rem 0 2rem;
    position: relative;
    z-index: 1;
}

.patent-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 3rem;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2rem;
    box-shadow: 0 10px 20px rgba(249, 115, 22, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 10px 20px rgba(249, 115, 22, 0.3);
    }
    50% {
        box-shadow: 0 15px 30px rgba(249, 115, 22, 0.5);
    }
    100% {
        box-shadow: 0 10px 20px rgba(249, 115, 22, 0.3);
    }
}

.patent-badge i {
    font-size: 1.25rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--secondary);
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 100%;
    height: 15px;
    background: rgba(37, 99, 235, 0.15);
    z-index: -1;
    border-radius: 10px;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-cta-center {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 3rem;
}

/* Floating Tap Card */
.hero-stats-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    background: white;
    padding: 2rem 3rem;
    border-radius: 5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    position: relative;
    z-index: 2;
    animation: float 3s ease-in-out infinite;
}

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

.tap-card-prominent {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 1.25rem 2.5rem;
    border-radius: 4rem;
    color: white;
    box-shadow: 0 20px 30px rgba(37, 99, 235, 0.4);
    position: relative;
}

.tap-card-prominent::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 4.5rem;
    padding: 3px;
    background: linear-gradient(135deg, rgba(255,255,255,0.5), rgba(255,255,255,0));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.tap-card-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    backdrop-filter: blur(5px);
}

.tap-card-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.tap-card-content p {
    font-size: 1rem;
    opacity: 0.9;
}

.stats-grid {
    display: flex;
    gap: 3rem;
}

.stat-item-large {
    text-align: center;
    position: relative;
}

.stat-item-large:first-child::after {
    content: '';
    position: absolute;
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 40px;
    background: var(--gray-200);
}

.stat-item-large .stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary);
    display: block;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item-large .stat-label {
    color: var(--gray-600);
    font-size: 1rem;
    font-weight: 500;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-header p {
    color: var(--gray-600);
    font-size: 1.125rem;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    background: rgba(37, 99, 235, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
}

/* ===== MISSION SECTION ===== */
.mission {
    padding: 5rem 0;
    background: white;
}

.mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.mission h2 {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 2rem;
    font-weight: 700;
}

.mission-story {
    display: flex;
    gap: 1.5rem;
    background: var(--gray-50);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.story-icon {
    font-size: 3rem;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.story-text p {
    margin-bottom: 1rem;
    color: var(--gray-700);
}

.mission-image img {
    width: 100%;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
}

/* ===== PROBLEM SECTION ===== */
.problem {
    padding: 5rem 0;
    background: var(--gray-50);
}

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

.problem-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.problem-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.problem-card p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.problem-list {
    list-style: none;
}

.problem-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.problem-list i {
    color: var(--accent);
}

/* ===== TABLET FEATURES ===== */
.tablet-features {
    padding: 5rem 0;
    background: white;
}

.tablet-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.tablet-image {
    position: relative;
}

.tablet-image img {
    width: 100%;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
}

.nfc-badge {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 3rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s infinite;
}

.tablet-specs {
    background: var(--gray-50);
    padding: 2.5rem;
    border-radius: 1.5rem;
    border: 1px solid var(--gray-200);
}

.tablet-specs h3 {
    font-size: 1.75rem;
    color: var(--secondary);
    margin-bottom: 2rem;
}

.specs-list {
    list-style: none;
}

.specs-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    font-size: 1rem;
    color: var(--gray-700);
    padding: 0.5rem;
    border-bottom: 1px dashed var(--gray-200);
}

.specs-list li:last-child {
    border-bottom: none;
}

.specs-list i {
    color: var(--primary);
    font-size: 1.25rem;
}

.specs-list strong {
    color: var(--secondary);
    font-weight: 600;
}

/* ===== PACKAGES PREVIEW ===== */
.packages-preview {
    padding: 5rem 0;
    background: var(--gray-50);
}

.preview-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.preview-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

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

.preview-card.popular {
    border-color: var(--primary);
    transform: scale(1.02);
}

.preview-card .badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.preview-card h3 {
    font-size: 1.75rem;
    color: var(--secondary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.preview-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1rem;
}

.preview-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-600);
}

.preview-card p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.preview-cta {
    text-align: center;
    margin-top: 2rem;
}

/* ===== NEWSLETTER SECTION ===== */
.newsletter-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.newsletter-box {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 2rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.newsletter-box h3 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.newsletter-box p {
    color: var(--gray-600);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.newsletter-form-large {
    margin: 0;
    padding: 0;
}

.newsletter-form-large .form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.newsletter-form-large input[type="email"] {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--gray-200);
    border-radius: 3rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    height: 54px;
    margin: 0;
}

.newsletter-form-large input[type="email"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.newsletter-form-large .btn {
    padding: 1rem 2rem;
    border-radius: 3rem;
    font-weight: 600;
    height: 54px;
    white-space: nowrap;
    margin: 0;
}

.checkbox {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--gray-600);
    margin: 1rem 0 0.5rem;
}

.checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin: 0;
}

.form-note {
    margin-top: 1rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* ===== CTA SECTION ===== */
.cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo p {
    color: var(--gray-400);
    font-size: 1rem;
    margin: 1rem 0;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: white;
    font-weight: 600;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-links a.active {
    color: white;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--gray-400);
}

.footer-contact i {
    color: var(--primary);
    width: 20px;
}

.footer-contact a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-500);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--gray-500);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

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

/* ===== FAQ PAGE STYLES ===== */
.faq-hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.faq-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.faq-section {
    padding: 4rem 0;
    background: white;
}

.faq-category {
    margin-bottom: 3rem;
}

.faq-category h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
}

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

.faq-item {
    background: var(--gray-50);
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.faq-question {
    padding: 1.5rem;
    background: var(--gray-50);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--secondary);
}

.faq-question i {
    color: var(--primary);
    transition: transform 0.3s;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    background: white;
    color: var(--gray-600);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 500px;
}

/* ===== CONTACT PAGE STYLES ===== */
.contact-hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 4rem 0;
}

.contact-info {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: 1.5rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
}

.info-item i {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.info-item h3 {
    margin-bottom: 0.25rem;
    color: var(--secondary);
}

.info-item p {
    color: var(--gray-600);
}

.info-item a {
    color: var(--gray-600);
    text-decoration: none;
}

.info-item a:hover {
    color: var(--primary);
}

.info-item .small {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: 0.5rem;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.trading-hours {
    margin-top: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 0.5rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .mission-grid,
    .tablet-showcase,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .problem-grid,
    .preview-cards,
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 90px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--gray-200);
        z-index: 999;
    }
    
    .nav-links.show {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats-container {
        flex-direction: column;
        padding: 2rem;
        border-radius: 2rem;
        gap: 2rem;
    }
    
    .tap-card-prominent {
        width: 100%;
        justify-content: center;
    }
    
    .stats-grid {
        width: 100%;
        justify-content: space-around;
    }
    
    .stat-item-large:first-child::after {
        display: none;
    }
    
    .problem-grid,
    .preview-cards,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-card.popular {
        transform: scale(1);
    }
    
    .cta h2 {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-cta-center {
        flex-direction: column;
    }
    
    .tap-card-prominent {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .stats-grid {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .newsletter-form-large .form-group {
        flex-direction: column;
    }
    
    .newsletter-form-large input[type="email"],
    .newsletter-form-large .btn {
        width: 100%;
    }
    
    .specs-list li {
        flex-wrap: wrap;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content-center,
.mission-grid,
.problem-card,
.preview-card,
.faq-item,
.contact-grid {
    animation: fadeInUp 0.6s ease-out;
}

/* ===== DARK MODE OVERRIDES ===== */
body.dark-mode {
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-surface-2: #334155;
    --dark-text: #f1f5f9;
    --dark-text-secondary: #cbd5e1;
    --dark-border: #475569;
    --dark-primary: #3b82f6;
    --dark-accent: #f97316;
}

body.dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

body.dark-mode .header {
    background: var(--dark-surface);
    border-bottom-color: var(--dark-border);
}

body.dark-mode .nav-links a {
    color: var(--dark-text-secondary);
}

body.dark-mode .nav-links a:hover,
body.dark-mode .nav-links a.active {
    color: var(--dark-primary);
}

body.dark-mode .logo span {
    background: linear-gradient(135deg, var(--dark-primary), #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.dark-mode .hero {
    background: linear-gradient(135deg, var(--dark-surface), var(--dark-bg));
}

body.dark-mode .hero-description,
body.dark-mode .stat-label {
    color: var(--dark-text-secondary);
}

body.dark-mode .hero-stats-container {
    background: var(--dark-surface-2);
    border-color: var(--dark-border);
}

body.dark-mode .stat-item-large .stat-number {
    background: linear-gradient(135deg, var(--dark-primary), #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.dark-mode .problem-card,
body.dark-mode .preview-card,
body.dark-mode .tablet-specs,
body.dark-mode .newsletter-box,
body.dark-mode .contact-info,
body.dark-mode .contact-form,
body.dark-mode .info-item,
body.dark-mode .faq-item,
body.dark-mode .faq-question,
body.dark-mode .faq-answer {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

body.dark-mode .mission-story {
    background: var(--dark-surface-2);
}

body.dark-mode .story-text p,
body.dark-mode .problem-card p,
body.dark-mode .problem-list li,
body.dark-mode .preview-card p,
body.dark-mode .specs-list li,
body.dark-mode .info-item p,
body.dark-mode .info-item a,
body.dark-mode .faq-answer {
    color: var(--dark-text-secondary);
}

body.dark-mode .footer {
    background: var(--dark-surface);
}

body.dark-mode .footer-links a {
    color: var(--dark-text-secondary);
}

body.dark-mode .footer-links a:hover,
body.dark-mode .footer-links a.active {
    color: var(--dark-primary);
}

body.dark-mode .newsletter-form-large input[type="email"],
body.dark-mode .form-control {
    background: var(--dark-surface-2);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

body.dark-mode .form-control:focus,
body.dark-mode .newsletter-form-large input[type="email"]:focus {
    border-color: var(--dark-primary);
}

/* ===== THEME TOGGLE BUTTON ===== */
.theme-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

#darkModeToggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

#darkModeToggle:hover {
    transform: scale(1.1);
}

#darkModeToggle .fa-sun {
    display: none;
}

body.dark-mode #darkModeToggle {
    background: linear-gradient(135deg, var(--dark-primary), #3b82f6);
}

body.dark-mode #darkModeToggle .fa-moon {
    display: none;
}

body.dark-mode #darkModeToggle .fa-sun {
    display: block;
}

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .footer,
    .cta,
    .newsletter-section,
    .theme-toggle,
    .contact-form {
        display: none;
    }
}