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

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

:root {
    /* Colors */
    --primary-color: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    --secondary-color: #00d4ff;
    --accent-color: #6366f1;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --bg-dark: #0a0a0f;
    --bg-dark-secondary: #13131a;
    --bg-dark-tertiary: #1a1a24;
    --bg-card: #1e1e2e;
    --bg-card-hover: #252538;
    
    --text-primary: #ffffff;
    --text-secondary: #b4b4c8;
    --text-muted: #808095;
    
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    --gradient-secondary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a24 0%, #0a0a0f 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.3);
    
    --shadow-primary: 0 8px 32px rgba(0, 102, 255, 0.3);
    --shadow-secondary: 0 8px 32px rgba(0, 212, 255, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

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

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

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

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

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

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

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.large-text {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 600;
}

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

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

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

.section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   HEADER & NAVIGATION
   =========================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.btn-nav {
    background: var(--gradient-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: white !important;
    font-weight: 600;
}

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

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(10px);
    z-index: 2000;
    transition: right var(--transition-normal);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-content {
    padding: var(--spacing-xl);
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    cursor: pointer;
    margin-bottom: var(--spacing-xl);
}

.mobile-nav-links {
    list-style: none;
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-lg);
}

.mobile-nav-links a {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    display: block;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary);
}

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

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

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
    margin-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    margin-bottom: var(--spacing-xxl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

.stat-item {
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.stat-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===========================
   PROBLEMS SECTION
   =========================== */

.problems {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-dark-secondary);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.problem-card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

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

.problem-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.problem-icon i {
    font-size: 2rem;
    color: white;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.problem-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.problem-highlight {
    display: inline-block;
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.9rem;
}

/* ===========================
   SOLUTION SECTION
   =========================== */

.solution {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-dark);
}

.solution-main-message {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xxl);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-primary);
}

.message-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.message-icon i {
    font-size: 2.5rem;
    color: white;
}

.solution-main-message h3 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.solution-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.solution-item:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-secondary);
}

.solution-item-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-item-icon i {
    font-size: 1.5rem;
    color: white;
}

.solution-item-content h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.solution-item-content p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ===========================
   REVENUE SECTION
   =========================== */

.revenue {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-dark-secondary);
}

.revenue-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.revenue-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.revenue-chart {
    position: relative;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(
        var(--primary-color) 0deg 252deg,
        var(--success-color) 252deg 360deg
    );
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.chart-center i {
    font-size: 4rem;
    color: var(--success-color);
}

.revenue-info h2 {
    margin-bottom: var(--spacing-md);
}

.revenue-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.revenue-steps {
    margin-bottom: var(--spacing-xl);
}

.revenue-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.step-content h4 {
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

.revenue-highlight-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--success-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.revenue-highlight-box i {
    font-size: 2rem;
    color: var(--success-color);
    flex-shrink: 0;
}

.revenue-highlight-box h4 {
    color: var(--success-color);
    margin-bottom: var(--spacing-xs);
}

.revenue-highlight-box p {
    margin-bottom: 0;
}

/* Revenue Calculator */
.revenue-calculator {
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.revenue-calculator h4 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.calculator-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.traffic-selector {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.traffic-option {
    flex: 1;
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-sm);
    background: var(--bg-dark-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.traffic-option:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.traffic-option.active {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-primary);
}

.traffic-label {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.traffic-option.active .traffic-label,
.traffic-option.active .traffic-sublabel {
    color: white;
}

.traffic-sublabel {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.monetization-breakdown {
    margin-bottom: var(--spacing-lg);
}

.monetization-breakdown h5 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.monetization-item {
    margin-bottom: var(--spacing-lg);
}

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

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

.method-name {
    font-weight: 600;
    font-size: 1rem;
}

.method-bar {
    height: 32px;
    background: var(--bg-dark-secondary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.method-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-sm);
    box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
}

.method-amount {
    text-align: right;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-light);
}

.total-revenue {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-dark-secondary);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-light);
}

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

.total-row span {
    font-size: 1.125rem;
    font-weight: 500;
}

.total-row strong {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.total-row.your-passive-income {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--success-color);
}

.your-passive-income span {
    color: var(--success-color);
    font-weight: 700;
}

.your-passive-income strong {
    color: var(--success-color);
    font-size: 2rem;
}

.calculator-note {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(0, 102, 255, 0.05);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-lg);
}

.calculator-note i {
    color: var(--primary-color);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.calculator-note p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===========================
   PORTFOLIO SECTION
   =========================== */

.portfolio {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-dark);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.portfolio-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.portfolio-icon i {
    font-size: 2.5rem;
    color: white;
}

.portfolio-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.portfolio-type {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.portfolio-stats {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.portfolio-stats span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(0, 102, 255, 0.15);
    color: var(--primary-light);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.portfolio-card-add {
    border: 2px dashed var(--border-light);
    background: transparent;
}

.portfolio-card-add .portfolio-icon {
    background: var(--gradient-secondary);
}

.portfolio-cta {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

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

.cta-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-dark-secondary);
}

.cta-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.cta-text h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.cta-text > p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

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

.cta-benefit {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
}

.cta-benefit i {
    color: var(--success-color);
    font-size: 1.5rem;
}

.cta-form-container {
    position: relative;
}

.cta-form {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.cta-form h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
    margin-bottom: 0;
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 2px solid var(--success-color);
}

.form-success.active {
    display: block;
}

.form-success i {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: var(--spacing-md);
}

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

.form-success p {
    margin-bottom: 0;
}

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

.footer {
    background: var(--bg-dark-tertiary);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xl);
}

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

.footer-brand p {
    color: var(--text-secondary);
    max-width: 400px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xxl);
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

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

.footer-column ul li a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--text-primary);
}

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

.footer-bottom p {
    color: var(--text-muted);
    margin-bottom: 0;
}

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

@media (max-width: 968px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .revenue-content,
    .cta-content,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .revenue-chart {
        max-width: 300px;
    }
    
    .chart-center i {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
        --spacing-xl: 2rem;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .problems-grid,
    .solution-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .traffic-selector {
        flex-direction: column;
    }
    
    .traffic-option {
        min-width: 100%;
    }
    
    .revenue-calculator {
        padding: var(--spacing-lg);
    }
    
    .your-passive-income strong {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .cta-form {
        padding: var(--spacing-lg);
    }
    
    .traffic-label {
        font-size: 1rem;
    }
    
    .method-amount,
    .total-row strong {
        font-size: 1rem;
    }
    
    .your-passive-income strong {
        font-size: 1.25rem;
    }
}

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

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

.hero-content,
.section-header {
    animation: fadeInUp 0.8s ease-out;
}

/* Smooth transitions for all interactive elements */
button,
a,
.problem-card,
.solution-item,
.portfolio-card {
    transition: all var(--transition-normal);
}