/* ========================================
   CUSTOM STYLES - BOTH THEMES
   ======================================== */

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

html {
    height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

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

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

/* File Upload Area */
.file-upload-area {
    border: 2px dashed var(--color-border);
    border-radius: 10px;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    background-color: var(--color-bg-secondary);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-hover);
}

.file-upload-area.dragover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-hover);
    transform: scale(1.02);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* Custom Button Styles */
.btn-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border: none;
    color: white;
    transition: all 0.3s ease;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

/* Loading Spinner */
.spinner-custom {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--color-border);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 1s linear infinite;
}

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

/* Feature Box */
.feature-box {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.feature-box h3 {
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.feature-box p {
    color: var(--color-text-secondary);
}

/* Stats Card */
.stats-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

.stats-card .stats-number {
    font-size: 2.5rem;
    font-weight: bold;
}

.stats-card .stats-label {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* Section Title */
.section-title {
    position: relative;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* Status Indicators */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.status-dot.success {
    background-color: var(--color-success);
}

.status-dot.warning {
    background-color: var(--color-warning);
}

.status-dot.danger {
    background-color: var(--color-danger);
}

.status-dot.info {
    background-color: var(--color-info);
}

/* Responsive utilities */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .main-content {
        padding: 1rem 0;
    }
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .btn-theme-toggle {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }
}

/* ========================================
   APP-SPECIFIC STYLES
   ======================================== */

/* Landing Page */
.app-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
}

/* Age Calculator Styles */
.calculator-card {
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.calculator-card:hover {
    transform: translateY(-5px);
}

.age-card {
    border-radius: 15px;
    transition: all 0.3s ease;
    animation: cardAppear 0.6s ease-out backwards;
}

.age-card:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25) !important;
}

/* Gradient backgrounds for age cards */
.gradient-purple {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-pink {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-cyan {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.gradient-green {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.gradient-orange {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.gradient-blue {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

.gradient-peach {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(30px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.age-number {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease;
}

.age-label {
    letter-spacing: 1px;
    font-weight: 600;
    font-size: 0.9rem;
}

.btn-calculate {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-calculate:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.total-seconds {
    border-radius: 15px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* Unit Converter Styles */
.converter-card {
    border-radius: 20px;
}

.category-tabs {
    background-color: var(--color-bg-secondary);
    padding: 1rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

/* Nav Pills Styling for Unit Converter */
.category-tabs .nav-pills .nav-link {
    border-radius: 12px;
    margin: 0.25rem;
    transition: all 0.3s ease;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    background-color: #ffffff !important;
    color: #212529 !important;
    border: 2px solid #28a745;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.category-tabs .nav-pills .nav-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.2);
    background-color: #f8f9fa !important;
    color: #28a745 !important;
    border-color: #28a745;
}

.category-tabs .nav-pills .nav-link.active {
    background-color: #28a745 !important;
    color: #ffffff !important;
    border-color: #28a745;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.4);
}

.category-tabs .nav-pills .nav-link.active:hover {
    background-color: #218838 !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(33, 136, 56, 0.5);
}

.swap-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    width: 100%;
    padding: 0.75rem;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.swap-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.result-display {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-left: 4px solid #667eea;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
}

.result-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.formula-display {
    background-color: var(--color-bg-secondary);
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
}

.formula-display h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text-primary);
}

.formula-display p {
    margin: 0;
    color: var(--color-text-secondary);
    font-family: 'Courier New', monospace;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .category-pills .nav-link {
        font-size: 0.85rem;
        padding: 0.5rem 0.75rem;
    }
}

/* ========================================
   NAVIGATION DROPDOWN ENHANCEMENTS
   ======================================== */

/* Enhanced dropdown menu items with descriptions */
.navbar .dropdown-menu {
    min-width: 320px;
    padding: 0.5rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: 1px solid #dee2e6;
}

.navbar .dropdown-menu .dropdown-item {
    padding: 0.75rem 1.25rem;
    white-space: normal;
    transition: all 0.2s ease;
}

.navbar .dropdown-menu .dropdown-item:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

.navbar .dropdown-menu .dropdown-item strong {
    color: #212529;
    font-size: 1rem;
}

.navbar .dropdown-menu .dropdown-item small {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    line-height: 1.3;
    color: #6c757d;
}

.navbar .dropdown-menu .dropdown-item i {
    margin-right: 0.5rem;
    color: #28a745;
}

@media (max-width: 768px) {
    .navbar .dropdown-menu {
        min-width: 100%;
    }
}