/* Swiss Style Design System */
:root {
    /* Color Palette */
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --purple-color: #9C27B0;
    
    /* Swiss Style Typography */
    --font-primary: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
}

/* Dark Mode Variables */
[data-bs-theme="dark"] {
    --bs-body-bg: #121212;
    --bs-body-color: #ffffff;
    --bs-card-bg: #1e1e1e;
    --bs-border-color: #333333;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.display-4 {
    font-weight: var(--font-weight-light);
    letter-spacing: -0.03em;
}

.lead {
    font-weight: var(--font-weight-regular);
    color: rgba(var(--bs-body-color-rgb), 0.8);
}

/* Navigation */
.navbar {
    backdrop-filter: blur(10px);
    background-color: rgba(248, 249, 250, 0.95) !important;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    transition: all var(--transition-normal);
}

[data-bs-theme="dark"] .navbar {
    background-color: rgba(18, 18, 18, 0.95) !important;
    border-bottom-color: rgba(255,255,255,0.1);
}

.navbar-brand {
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    letter-spacing: -0.01em;
}

/* Buttons */
.btn {
    font-weight: var(--font-weight-medium);
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    transition: all var(--transition-fast);
    border: none;
    text-transform: none;
    letter-spacing: 0.01em;
}

.btn-generate {
    font-size: 1.25rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--purple-color));
    border: none;
    color: white;
    transform: scale(1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-generate::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 var(--transition-slow);
}

.btn-generate:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

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

.btn-generate:active {
    transform: scale(0.98);
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    transition: all var(--transition-normal);
    background: var(--bs-card-bg, white);
}

.card:hover {
    transform: translateY(-2px);
}

.idea-card {
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    border: 1px solid rgba(0,0,0,0.05);
    animation: slideUp 0.5s ease-out;
}

[data-bs-theme="dark"] .idea-card {
    background: linear-gradient(135deg, #1e1e1e, #2a2a2a);
    border-color: rgba(255,255,255,0.1);
}

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

/* Badges */
.badge {
    font-weight: var(--font-weight-medium);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

/* Idea Category Badges */
.idea-category .badge {
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-weight-bold);
}

.badge.bg-criativa { background-color: var(--purple-color) !important; }
.badge.bg-relaxante { background-color: var(--success-color) !important; }
.badge.bg-ativa { background-color: var(--warning-color) !important; color: #000 !important; }
.badge.bg-social { background-color: var(--primary-color) !important; }
.badge.bg-produtiva { background-color: var(--danger-color) !important; }
.badge.bg-offline { background-color: #6c757d !important; }
.badge.bg-educativa { background-color: #17a2b8 !important; }
.badge.bg-esportiva { background-color: #fd7e14 !important; }
.badge.bg-culinaria { background-color: #e83e8c !important; }
.badge.bg-artistica { background-color: #6f42c1 !important; }

/* Form Controls */
.form-select, .form-control {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    font-weight: var(--font-weight-regular);
}

.form-select:focus, .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
}

.form-label {
    font-weight: var(--font-weight-medium);
    color: rgba(var(--bs-body-color-rgb), 0.8);
    margin-bottom: var(--spacing-sm);
}

/* Animations */
.pulse {
    animation: pulse 2s infinite;
}

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

.bounce-in {
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

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

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

.slide-in-right {
    animation: slideInRight 0.4s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Challenge Timer */
.challenge-timer {
    background: linear-gradient(135deg, #ff6b6b, #feca57);
    border-radius: 20px;
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

#timerDisplay {
    font-family: 'Courier New', monospace;
    font-weight: var(--font-weight-bold);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    color: white;
}

/* Offcanvas */
.offcanvas {
    border: none;
    box-shadow: var(--shadow-lg);
}

.offcanvas-header {
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding: var(--spacing-lg);
}

[data-bs-theme="dark"] .offcanvas-header {
    border-bottom-color: rgba(255,255,255,0.1);
}

.offcanvas-body {
    padding: var(--spacing-lg);
}

/* Accordion */
.accordion-button {
    font-weight: var(--font-weight-medium);
    border-radius: 8px !important;
    border: none;
    background-color: transparent;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(var(--bs-primary-rgb), 0.1);
    color: var(--primary-color);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
}

.accordion-item {
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
}

[data-bs-theme="dark"] .accordion-item {
    border-color: rgba(255,255,255,0.1);
}

/* Ad Containers */
.ad-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 90px;
    background-color: rgba(0,0,0,0.02);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    position: relative;
}

.ad-container::before {
    content: 'Publicidade';
    position: absolute;
    top: 4px;
    left: 8px;
    font-size: 0.75rem;
    color: rgba(0,0,0,0.4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-bs-theme="dark"] .ad-container {
    background-color: rgba(255,255,255,0.02);
}

[data-bs-theme="dark"] .ad-container::before {
    color: rgba(255,255,255,0.4);
}

.admob-banner {
    width: 100%;
    height: 50px;
    background: linear-gradient(90deg, #f0f0f0, #e0e0e0, #f0f0f0);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 0.875rem;
}

/* Footer */
footer {
    margin-top: auto;
    border-top: 1px solid rgba(0,0,0,0.1);
}

[data-bs-theme="dark"] footer {
    border-top-color: rgba(255,255,255,0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .btn-generate {
        font-size: 1.1rem;
        padding: 0.875rem 1.75rem;
    }
    
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .idea-meta .badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .offcanvas {
        width: 85% !important;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .btn-generate {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
    
    .idea-actions {
        display: grid;
        gap: var(--spacing-sm);
    }
    
    .idea-actions .btn {
        width: 100%;
    }
    
    .row.g-3 > .col-md-3 {
        margin-bottom: var(--spacing-sm);
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--bs-border-color);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .badge {
        border: 1px solid currentColor;
    }
}

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

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .offcanvas,
    .modal,
    .ad-container {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000;
        box-shadow: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Screen Reader Only */
.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;
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--purple-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-bs-theme="dark"] .glass-effect {
    background: rgba(0, 0, 0, 0.1);
    border-color: rgba(255, 255, 255, 0.1);
}

.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1976D2;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: #2a2a2a;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #555;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #777;
}