/* ========================================
   MEDIKI AI - MOBILE-FIRST RESPONSIVE WEBSITE
   Optimized for Mobile, Tablet, Desktop
   ======================================== */

/* ========================================
   ROOT VARIABLES & GLOBAL STYLES (MOBILE)
   ======================================== */

:root {
    --primary-color: #0a3a47;
    --primary-light: #0d5a6f;
    --primary-lighter: #1a8fa0;
    --accent-color: #00d4ff;
    --accent-light: #4dd9ff;
    --secondary-color: #f0f7f9;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-muted: #999999;
    --border-color: #e0e0e0;
    --success-color: #4caf50;
    --error-color: #f44336;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background-color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
}

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

/* ========================================
   TYPOGRAPHY (MOBILE FIRST)
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 1.5rem;
    letter-spacing: -0.3px;
}

h2 {
    font-size: 1.3rem;
    letter-spacing: -0.2px;
}

h3 {
    font-size: 1.1rem;
}

p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.6;
}

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

a:hover {
    color: var(--accent-color);
}

/* ========================================
   BUTTONS & FORMS (MOBILE FIRST)
   ======================================== */

.btn {
    display: inline-block;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    white-space: nowrap;
    letter-spacing: 0.3px;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    width: 100%;
}

.btn-secondary:hover {
    background: var(--secondary-color);
}

.cta-nav {
    /*background: var(--accent-color);*/
    color: var(--primary-color);
    border: none;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.85rem;
    width: auto;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* ========================================
   NAVIGATION BAR (MOBILE FIRST)
   ======================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: white;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
    width: 100%;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 0px;
    flex-shrink: 0;
    white-space: nowrap;
    height: 40px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.logo-image {
    height: 40px;
    width: auto;
    max-width: 140px;
    display: block;
    object-fit: contain;
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.navbar-logo:hover .logo-image {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    position: fixed;
    left: -100%;
    top: 60px;
    flex-direction: column;
    background: white;
    width: 100%;
    text-align: center;
    transition: left var(--transition-base);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg) 0;
    gap: 0;
    z-index: 999;
    list-style: none;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
}

.nav-menu.active {
    left: 0;
}

.nav-link {
    display: block;
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--spacing-md);
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.95rem;
}

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

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    margin-left: auto;
    flex-shrink: 0;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   HERO SECTION (MOBILE FIRST)
   ======================================== */

.hero {
    padding: var(--spacing-lg) var(--spacing-sm);
    background: linear-gradient(135deg, #ffffff 0%, var(--secondary-color) 100%);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
    min-height: auto;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero {
        display: grid;
        grid-template-columns: 1fr 1fr;
        min-height: 90vh;
        gap: var(--spacing-2xl);
        align-items: center;
        padding: var(--spacing-2xl) var(--spacing-lg);
        perspective: 1000px;
    }
}

.hero::before {
    display: none;
}

.hero-content {
    z-index: 2;
    animation: slideInLeft 0.8s ease-out;
    width: 100%;
    text-align: center;
}

@media (min-width: 768px) {
    .hero-content {
        text-align: left;
    }
}

.hero-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-buttons {
        flex-direction: row;
        align-items: flex-start;
    }

    .hero-buttons .btn {
        width: auto;
        max-width: none;
    }
}

.hero-visual {
    display: none;
}

@media (min-width: 768px) {
    .hero-visual {
        display: flex !important;
        perspective: 1000px;
        position: relative;
        height: 100%;
        align-items: center;
        justify-content: center;
    }

    .floating-card {
        position: absolute !important;
        display: block !important;
        background: white;
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        animation: float 3s ease-in-out infinite;
        font-weight: 600;
        color: var(--text-dark);
    }

    .floating-card.card-1 {
        top: 10%;
        left: 5%;
        animation-delay: 0s;
    }

    .floating-card.card-2 {
        top: 50%;
        right: 5%;
        animation-delay: 1s;
    }

    .floating-card.card-3 {
        bottom: 10%;
        left: 20%;
        animation-delay: 2s;
    }
}

/* ========================================
   SECTIONS (MOBILE FIRST)
   ======================================== */

.section {
    padding: var(--spacing-xl) var(--spacing-sm);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.section:nth-child(even) {
    background: var(--secondary-color);
}

.section-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    position: relative;
    font-size: 1.3rem;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: var(--accent-color);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.05rem;
    margin-bottom: var(--spacing-xl);
}

/* ========================================
   FEATURES GRID (MOBILE FIRST)
   ======================================== */

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.feature-card p {
    margin: 0;
    font-size: 0.9rem;
}

/* ========================================
   PROBLEM SECTION (MOBILE FIRST)
   ======================================== */

.problem-section {
    background: linear-gradient(135deg, #f5f5f5 0%, var(--secondary-color) 100%);
}

.problem-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
    margin-top: var(--spacing-xl);
}

.problem-text {
    animation: slideInLeft 0.8s ease-out;
    width: 100%;
}

.problem-story {
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-dark);
    position: relative;
    padding-left: var(--spacing-md);
}

.problem-story::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-color);
    border-radius: var(--radius-sm);
}

.problem-story.highlight {
    background: rgba(0, 212, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.problem-story.final {
    font-style: italic;
    color: var(--error-color);
    font-weight: 500;
}

.problem-visual {
    display: flex;
    justify-content: center;
    animation: slideInRight 0.8s ease-out;
    width: 100%;
}

.phone-mockup {
    width: 100%;
    max-width: 220px;
    height: 380px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 30px;
    padding: 10px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 0 0 18px 18px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 25px;
    padding: var(--spacing-md);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    font-size: 0.85rem;
}

.notification {
    background: var(--secondary-color);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    animation: slideInRight 0.5s ease-out;
}

.dot {
    width: 10px;
    height: 10px;
    background: var(--error-color);
    border-radius: 50%;
    flex-shrink: 0;
    animation: pulse 2s infinite;
    margin-top: 2px;
}

.notification-text p {
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
    font-size: 0.8rem;
}

.notification-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

/* ========================================
   IMPACT SECTION (MOBILE FIRST)
   ======================================== */

.impact-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
}

.impact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.impact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.impact-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
}

.impact-card.highlight {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-color);
}

.impact-number {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.impact-card p {
    color: white;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.impact-message {
    text-align: center;
    margin-top: var(--spacing-xl);
    font-size: 1.05rem;
    line-height: 1.7;
}

.highlight-text {
    color: var(--accent-color);
    font-weight: 700;
}

/* ========================================
   COMPARISON TABLE (MOBILE FIRST)
   ======================================== */

.comparison-section {
    background: white;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
    .comparison-table-wrapper {
        width: 100vw;
        margin-left: calc(-50vw + 50%);
    }
}

@media (min-width: 768px) {
    .comparison-table-wrapper {
        overflow-x: visible;
        width: 100%;
    }
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    min-width: 500px;
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
}

.comparison-table th {
    padding: 12px 8px;
    text-align: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.comparison-table tbody tr:hover {
    background: var(--secondary-color);
}

.comparison-table td {
    padding: 12px 8px;
    font-size: 0.8rem;
}

.comparison-table .negative {
    color: var(--error-color);
    font-weight: 500;
}

.comparison-table .positive {
    color: var(--success-color);
    font-weight: 500;
}

/* ========================================
   HOW IT WORKS SECTION (MOBILE FIRST)
   ======================================== */

.how-it-works {
    background: white;
}

.steps-container {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.step {
    display: grid;
    grid-template-columns: 50px 1fr;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--secondary-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
    transition: all var(--transition-base);
}

.step:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.step-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    background: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.step-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.step-content p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.6;
}

.step-connector {
    display: none;
}

/* ========================================
   CONTROL SECTION (MOBILE FIRST)
   ======================================== */

.control-section {
    background: var(--secondary-color);
}

.control-cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.control-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
}

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

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.control-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.control-card p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========================================
   TESTIMONIALS SECTION (MOBILE FIRST)
   ======================================== */

.testimonials-section {
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.testimonial-card {
    background: var(--secondary-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 5px;
    right: 10px;
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.15;
}

.testimonial-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.testimonial-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}

.testimonial-info h3 {
    color: var(--primary-color);
    margin: 0 0 2px 0;
    font-size: 1rem;
}

.testimonial-info p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.testimonial-text {
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.6;
    font-size: 0.9rem;
}

.testimonial-stats {
    display: flex;
    justify-content: space-around;
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
    gap: var(--spacing-sm);
}

.stat {
    text-align: center;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.stat-value {
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent-color);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

/* ========================================
   FAQ SECTION (MOBILE FIRST)
   ======================================== */

.faq-section {
    background: white;
}

.faq-container {
    max-width: 100%;
    margin: var(--spacing-xl) 0 0;
}

.faq-item {
    background: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

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

.faq-question {
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: all var(--transition-base);
    gap: var(--spacing-sm);
}

.faq-question:hover {
    background: rgba(0, 212, 255, 0.03);
}

.faq-question h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 0.95rem;
    text-align: left;
    flex: 1;
    line-height: 1.4;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 700;
    transition: transform var(--transition-base);
    min-width: 25px;
    text-align: center;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.7;
    font-size: 0.9rem;
}

/* ========================================
   DEMO SECTION (MOBILE FIRST)
   ======================================== */

.demo-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
}

.demo-section .section-title,
.demo-section .section-subtitle {
    color: white;
}

.demo-section .section-title::after {
    background: var(--accent-color);
}

.demo-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.demo-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all var(--transition-base);
}

.demo-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.demo-card.featured {
    background: rgba(0, 212, 255, 0.15);
    border: 2px solid var(--accent-color);
}

.demo-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.demo-card h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.demo-card p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.demo-time {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md) !important;
}

.demo-note {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.8);
    font-style: italic;
    font-size: 0.9rem;
}

/* ========================================
   MODAL (MOBILE FIRST)
   ======================================== */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease-out;
    overflow-y: auto;
}

.modal-content {
    background: white;
    margin: 20% auto;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    width: 95%;
    max-width: 500px;
    position: relative;
    animation: slideUp 0.4s ease-out;
}

.close {
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 1.75rem;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-base);
}

.close:hover {
    color: var(--text-dark);
}

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.3rem;
}

/* ========================================
   FOOTER (MOBILE FIRST)
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: var(--spacing-xl) var(--spacing-sm);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-base);
    font-size: 0.9rem;
}

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

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-color);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ========================================
   TABLET & DESKTOP RESPONSIVE (480px+)
   ======================================== */

@media (min-width: 480px) {
    :root {
        --spacing-lg: 1.75rem;
        --spacing-xl: 2.25rem;
        --spacing-2xl: 3rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    p {
        font-size: 1rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .logo-image {
        height: 40px;
        max-width: 150px;
    }

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

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

    .control-cards-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .step {
        grid-template-columns: 70px 1fr !important;
        padding: var(--spacing-lg);
    }

    .step-number {
        width: 70px;
        height: 70px;
        font-size: 1.5rem;
    }

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

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

    .btn {
        width: auto;
    }
}

/* ========================================
   TABLET DEVICES (768px+)
   ======================================== */

@media (min-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }

    h1 {
        font-size: 2.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.3rem;
    }

    .container {
        padding: 0 var(--spacing-lg);
    }

    .section {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .logo-image {
        height: 40px;
        max-width: 180px;
    }

    .nav-menu {
        display: flex !important;
        position: static !important;
        left: auto !important;
        top: auto !important;
        flex-direction: row;
        background: transparent !important;
        width: auto;
        gap: var(--spacing-xl);
        padding: 0;
        box-shadow: none;
        margin-left: auto;
    }

    .nav-link {
        padding: 0 var(--spacing-sm);
        border-bottom: none;
        position: relative;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--accent-color);
        transition: width 0.25s;
    }

    .nav-link:hover::after {
        width: 100%;
    }

    .mobile-menu-btn {
        display: none !important;
    }

    .hero {
        grid-template-columns: 1fr 1fr !important;
        display: grid;
        min-height: 85vh;
        gap: var(--spacing-2xl);
    }

    .hero-visual {
        display: flex !important;
    }

    .floating-card {
        position: absolute !important;
        display: block !important;
    }

    .problem-content {
        grid-template-columns: 1fr 1fr !important;
        gap: var(--spacing-2xl);
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

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

    .control-cards-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    .step {
        grid-template-columns: 100px 1fr !important;
        padding: var(--spacing-lg);
    }

    .step-number {
        width: 90px;
        height: 90px;
        font-size: 2rem;
    }

    .step-connector {
        display: block !important;
    }

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

    .footer-content {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: var(--spacing-2xl);
    }

    .demo-options {
        grid-template-columns: repeat(2, 1fr) !important;
        max-width: 900px;
        margin-left: auto;
        margin-right: auto;
    }

    .demo-card.featured {
        transform: scale(1.02);
    }
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}