/* ============================================
   FINVESTOR - Main Stylesheet
   Calculate Smart. Invest Better.
   ============================================ */

/* ============================================
   LIVE QUOTES TICKER STYLES
   ============================================ */

/* ============================================
   ADSENSE & AFFILIATE STYLES
   ============================================ */

/* Ad Slots */
.ad-slot {
    background: #f8f9fa;
    border: 1px dashed #dee2e6;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    margin: var(--spacing-xl) 0;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.ad-slot::before {
    content: 'Advertisement';
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--bg-primary);
    padding: 0 10px;
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 600;
}

.ad-slot-leaderboard {
    max-width: 728px;
    min-height: 90px;
    margin: var(--spacing-xl) auto;
}

.ad-slot-rectangle {
    max-width: 300px;
    min-height: 250px;
    margin: var(--spacing-lg) auto;
}

.ad-slot-banner {
    max-width: 320px;
    min-height: 50px;
    margin: var(--spacing-lg) auto;
}

/* Affiliate Section */
.affiliate-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

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

.affiliate-header h2 {
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.affiliate-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.affiliate-disclosure {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-size: var(--font-size-sm);
    color: #856404;
}

.affiliate-disclosure strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

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

.affiliate-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text-primary);
    display: block;
}

.affiliate-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 4px 20px rgba(0, 123, 255, 0.15);
    transform: translateY(-2px);
}

.affiliate-card-badge {
    display: inline-block;
    background: var(--success-green);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.affiliate-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.affiliate-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.affiliate-card-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.affiliate-card-features li {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    padding-left: 20px;
    position: relative;
}

.affiliate-card-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

.affiliate-card-cta {
    display: inline-block;
    background: var(--primary-blue);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
}

.affiliate-card-cta:hover {
    background: var(--primary-blue-dark);
}

/* ============================================
   LIVE QUOTES TICKER STYLES
   ============================================ */

.ticker-container {
    width: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    overflow: hidden;
    position: relative;
    z-index: 1001;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.ticker-wrapper {
    display: flex;
    align-items: center;
    padding: 12px 0;
}

.ticker-content {
    display: flex;
    animation: tickerScroll 30s linear infinite;
    gap: 40px;
    padding: 0 20px;
}

.ticker-content:hover {
    animation-play-state: paused;
}

@keyframes tickerScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    white-space: nowrap;
    min-width: 200px;
    transition: all 0.3s ease;
}

.ticker-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.ticker-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.ticker-name {
    font-weight: 600;
    color: #fff;
    font-size: 14px;
    flex-shrink: 0;
}

.ticker-value {
    color: #4ade80;
    font-weight: 700;
    font-size: 14px;
    font-family: 'Courier New', monospace;
}

.ticker-change {
    font-size: 13px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
}

.ticker-change.positive {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
}

.ticker-change.negative {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
}

/* Logo Styles in Navigation */
.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-image {
    width: 80px;
    height: 80px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.logo-name {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, #4ade80 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-tagline {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ============================================
   CSS VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
    /* Primary Colors */
    --primary-blue: #007bff;
    --primary-blue-dark: #0056b3;
    --primary-blue-light: #66b0ff;
    
    /* Secondary Colors */
    --success-green: #28a745;
    --success-green-dark: #1e7e34;
    --warning-orange: #fd7e14;
    --error-red: #dc3545;
    --info-cyan: #17a2b8;
    
    /* Neutral Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    
    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 70px;
    --footer-height: auto;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --border-color: #4a4a4a;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   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: 0;
}

:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-to-content {
    position: fixed;
    top: -40px;
    left: 0;
    background: var(--primary-blue);
    color: white;
    padding: 8px;
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-3xl);
    line-height: 1.2;
}

h2 {
    font-size: var(--font-size-2xl);
    line-height: 1.3;
}

h3 {
    font-size: var(--font-size-xl);
    line-height: 1.4;
}

h4 {
    font-size: var(--font-size-lg);
    line-height: 1.5;
}

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

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

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

strong, b {
    font-weight: 600;
}

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

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1400px;
}

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

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

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

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

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

.flex-wrap {
    flex-wrap: wrap;
}

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

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

.flex-column {
    display: flex;
    flex-direction: column;
}

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

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

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

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

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo:hover {
    color: var(--primary-blue-dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

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

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--primary-blue-light);
    color: var(--primary-blue-dark);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: all var(--transition-fast);
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

.menu-toggle-icon::before {
    top: -8px;
}

.menu-toggle-icon::after {
    top: 8px;
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    width: 50px;
    height: 26px;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

.dark-mode-toggle::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-blue);
    border-radius: var(--radius-full);
    top: 1px;
    left: 2px;
    transition: all var(--transition-fast);
}

[data-theme="dark"] .dark-mode-toggle::after {
    left: 26px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-title {
    color: white;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

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

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue-light), var(--primary-blue));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    min-height: 48px;
    min-width: 48px;
}

.btn:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

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

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

.btn-success:hover {
    background-color: var(--success-green-dark);
    border-color: var(--success-green-dark);
}

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

.btn-outline:hover {
    background-color: var(--bg-secondary);
    border-color: var(--text-primary);
}

.btn-lg {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
    min-height: 40px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-label.required::after {
    content: ' *';
    color: var(--error-red);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 48px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

.form-control.is-invalid {
    border-color: var(--error-red);
}

.form-control.is-valid {
    border-color: var(--success-green);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.invalid-feedback {
    display: none;
    color: var(--error-red);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-control.is-invalid + .invalid-feedback {
    display: block;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* Radio & Checkbox Groups */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
}

/* ============================================
   CALCULATOR STYLES
   ============================================ */
.calculator {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.calculator-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: white;
    padding: var(--spacing-xl);
    text-align: center;
}

.calculator-header h2 {
    color: white;
    margin: 0;
}

.calculator-body {
    padding: var(--spacing-xl);
    display: grid;
    gap: var(--spacing-xl);
}

.calculator-inputs {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.calculator-results {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-blue);
}

.result-card {
    background: linear-gradient(135deg, var(--primary-blue-light), var(--primary-blue));
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.result-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: var(--spacing-sm) 0;
}

.result-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.result-breakdown {
    display: grid;
    gap: var(--spacing-sm);
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.breakdown-item:last-child {
    border-bottom: none;
}

.breakdown-label {
    color: var(--text-secondary);
}

.breakdown-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   TABLE STYLES
   ============================================ */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

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

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ============================================
   AI PLANNER STYLES
   ============================================ */
.ai-planner {
    max-width: 800px;
    margin: 0 auto;
}

.ai-welcome {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.ai-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin: 0 auto var(--spacing-lg);
    color: white;
}

.ai-message {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--primary-blue);
}

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

.step {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

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

.step-number {
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.ai-results {
    background: linear-gradient(135deg, var(--success-green), var(--success-green-dark));
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-xl);
}

.disclaimer-box {
    background: var(--warning-orange);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

.footer-tagline {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

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

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

.footer-disclaimer {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.d-none {
    display: none !important;
}

.d-block {
    display: block !important;
}

.d-flex {
    display: flex !important;
}

.d-inline-block {
    display: inline-block !important;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.text-primary { color: var(--primary-blue); }
.text-success { color: var(--success-green); }
.text-warning { color: var(--warning-orange); }
.text-danger { color: var(--error-red); }
.text-secondary { color: var(--text-secondary); }

.bg-primary { background-color: var(--primary-blue); }
.bg-success { background-color: var(--success-green); }
.bg-secondary { background-color: var(--bg-secondary); }

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

/* Mobile First - Base styles already mobile-friendly */

/* Tablet (481px - 768px) */
@media (min-width: 481px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small Desktop (769px - 1024px) */
@media (min-width: 769px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Desktop (>1024px) */
@media (min-width: 1025px) {
    .nav-list {
        display: flex;
    }
    
    .menu-toggle {
        display: none;
    }
}

/* Mobile Navigation (< 768px) */
@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        display: none;
        z-index: var(--z-fixed);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .calculator-body {
        grid-template-columns: 1fr;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .header,
    .footer,
    .btn,
    .form-group {
        display: none;
    }
    
    .calculator,
    .result-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}