/* Numerology Calculator - Mobile-First Responsive CSS */

/* CSS Custom Properties for theming */
:root {
    /* Light theme colors */
    --primary-color: #7c3aed;
    --primary-hover: #6d28d9;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Background colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Text colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-light: #ffffff;
    
    /* Border colors */
    --border-color: #e2e8f0;
    --border-focus: #7c3aed;
    --border-light: #f1f5f9;
    
    /* Shadow */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    
    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --bg-card: #1e293b;
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        --border-color: #334155;
        --border-focus: #a78bfa;
        --border-light: #475569;
    }
}

/* Manual theme control */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --border-focus: #a78bfa;
    --border-light: #475569;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-focus: #7c3aed;
    --border-light: #f1f5f9;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 1.875rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

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

/* App Header */
.app-header {
    background: var(--gradient-primary);
    color: var(--text-light);
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo-text .subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
    font-weight: 400;
}

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

.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.theme-icon {
    font-size: 1.2rem;
}

.app-header h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* App Container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
    opacity: 0.8;
}

/* Form Styles */
.input-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 1rem;
}

.label-icon {
    font-size: 1.2rem;
    opacity: 0.8;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Toggle Group */
.toggle-group {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.toggle-group input[type="radio"] {
    display: none;
}

.toggle-group label {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-weight: 500;
}

.toggle-group input[type="radio"]:checked + label {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Dynamic Fields */
.dynamic-fields {
    margin-bottom: var(--spacing-md);
}

.phone-field,
.custom-field {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    align-items: center;
}

.phone-field input,
.custom-field input {
    flex: 1;
}

.remove-btn {
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.remove-btn:hover {
    background: #dc2626;
}

.add-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color 0.3s ease;
}

.add-btn:hover {
    background: #059669;
}

/* Phone Number Suggestions */
.phone-suggestions {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.phone-suggestions h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    text-align: center;
}

.suggestion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.suggestion-card {
    background: var(--bg-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.suggestion-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.suggestion-number {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    line-height: 2rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.suggestion-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}

.suggestion-note {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.suggestion-note p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

/* Buttons */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 44px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: #475569;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-accent:hover {
    background: #d97706;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Results Section */
.results-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.system-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.system-badge {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
}

.timestamp {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

@media (min-width: 1024px) {
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Result Cards */
.result-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.result-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.number-display {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-md);
    min-height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calculation-breakdown {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: pre-wrap;
}

.interpretation {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Phone Results */
.phone-results {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

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

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

.phone-result-item {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.phone-result-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.phone-compatibility {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.compatibility-high {
    background: var(--success-color);
    color: white;
}

.compatibility-medium {
    background: var(--accent-color);
    color: white;
}

.compatibility-low {
    background: var(--error-color);
    color: white;
}

/* Custom Summary */
.custom-summary {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

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

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

.custom-field-label {
    font-weight: 600;
    color: var(--text-primary);
}

.custom-field-value {
    color: var(--text-secondary);
}

/* Export Actions */
.export-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* Mobile Bottom Bar */
.mobile-bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 -10px 25px -5px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
    .mobile-bottom-bar {
        background: rgba(15, 23, 42, 0.95);
        border-top-color: var(--border-color);
    }
}

.bottom-bar-content {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
}

.bottom-bar-content .btn {
    flex: 1;
    min-height: 56px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.bottom-bar-content .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
    z-index: -1;
}

.bottom-bar-content .btn:hover::before {
    left: 100%;
}

.btn-icon {
    font-size: 1.2rem;
    margin-right: var(--spacing-xs);
}

.btn-text {
    font-weight: 600;
}

@media (min-width: 768px) {
    .mobile-bottom-bar {
        display: none;
    }
}

/* Install Prompt */
.install-prompt {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.install-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.install-content h3 {
    margin-bottom: var(--spacing-md);
}

.install-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    color: white;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print Styles */
@media print {
    .mobile-bottom-bar,
    .install-prompt,
    .loading-overlay,
    .add-btn,
    .remove-btn,
    .form-actions,
    .export-actions {
        display: none !important;
    }
    
    .app-header {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .input-section,
    .results-section {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
    
    .result-card {
        break-inside: avoid;
        margin-bottom: var(--spacing-lg);
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-muted: #000000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Enhanced Result Cards */
.result-card {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

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

.result-card h3 {
    position: relative;
}

.result-card h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

/* Enhanced Number Display */
.number-display {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Enhanced Buttons */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

/* Enhanced Form Inputs */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    transform: scale(1.02);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Enhanced Toggle Group */
.toggle-group label {
    position: relative;
    overflow: hidden;
}

.toggle-group label::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.toggle-group input[type="radio"]:checked + label::before {
    opacity: 1;
}

.toggle-group input[type="radio"]:checked + label {
    color: white;
    border-color: transparent;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: var(--spacing-md);
    }
    
    .input-section,
    .results-section {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .phone-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
    }
    
    .suggestion-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .suggestion-card {
        padding: var(--spacing-sm);
    }
    
    .suggestion-card p {
        font-size: 0.8rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .logo-text h1 {
        font-size: 1.5rem;
    }
    
    .logo-text .subtitle {
        font-size: 0.85rem;
    }
    
    .section-header {
        padding: var(--spacing-md);
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: var(--spacing-sm);
    }
    
    .input-section,
    .results-section {
        padding: var(--spacing-md);
    }
    
    .suggestion-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .suggestion-card p {
        font-size: 0.75rem;
    }
    
    .bottom-bar-content .btn {
        min-height: 48px;
        font-size: 0.8rem;
    }
    
    .btn-icon {
        font-size: 1rem;
    }
}