/* Base Reset and Variables */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5f6fa;
    --text-primary: #2c3e50;
    --text-secondary: #95a5a6;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --error-color: #e74c3c;
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --header-height: 120px;
    --text-color: #1f2937;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--secondary-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background: white;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    animation: slideDown 0.5s ease-out;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    font-size: 1.5rem;
    color: var(--primary-color);
    animation: rotate360 1s ease-in-out;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
}

[data-theme="dark"] {
    /* Dark theme colors */
    --secondary-color: #374151;
    --text-color: #e5e7eb;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.header-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
    color: var(--text-color);
    text-decoration: none;
}

.header-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Adding focus styles for accessibility */
.header-btn:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 2px;
}

/* Icons color adjustment */
.header-btn i {
    color: var(--text-color);
}

/* Optional: Active state */
.header-btn:active {
    transform: translateY(0);
}

/* Responsive adjustments (if needed) */
@media (max-width: 768px) {
    .header-btn span {
        display: none;
    }
    
    .header-btn {
        padding: 0.5rem;
    }
}

/* Side Navigation */
.side-nav {
    position: fixed;
    left: 0;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    width: 250px;
    background: white;
    padding: 2rem 1rem;
    box-shadow: var(--box-shadow);
    transform: translateX(0);
    transition: transform var(--transition-speed);
    z-index: 900;
}

.nav-profile {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}

.nav-links li a:hover,
.nav-links li a.active {
    background: var(--primary-color);
    color: white;
}

.nav-links li a i {
    width: 20px;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    margin-top: var(--header-height);
    padding: 2rem;
    animation: fadeIn 0.5s ease-out;
}

/* Date Card */
.date-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.card-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-speed);
}

.tab-btn.active {
    background: black;
    color: white;
}

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

/* Date Input Container */
.date-input-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
}

.styled-select,
.styled-input {
    align-items: center;
    padding: 0.75rem;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: all var(--transition-speed);
    appearance: none;
    background: white;
}

.styled-select:focus,
.styled-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.input-wrapper i.fa-chevron-down {
    position: absolute;
    right: 1rem;
    bottom: 1rem;
    color: var(--text-secondary);
    pointer-events: none;
}

/* Result Container */
.result-container {
    background: var(--secondary-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    animation: slideUp 0.3s ease-out;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Quick Facts */
.quick-facts {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.facts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.carousel-controls {
    display: flex;
    gap: 0.5rem;
}

.carousel-controls button {
    background: var(--secondary-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.carousel-controls button:hover {
    background: var(--primary-color);
    color: white;
}

.facts-carousel {
    overflow: hidden;
    position: relative;
}

/* Today Card */
.today-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.today-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.today-dates {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.date-box {
    background: var(--secondary-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.date-value {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1100;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all var(--transition-speed);
}

/* Animations */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@keyframes rotate360 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
    }
    
    .side-nav {
        transform: translateX(-100%);
    }
    
    .side-nav.active {
        transform: translateX(0);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 1rem;
    }
    
    .header-title {
        font-size: 1.25rem;
    }
    
    .header-btn span {
        display: none;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .date-input-container {
        grid-template-columns: 1fr;
    }
    
    .card-tabs {
        flex-direction: column;
    }
}

/* Dark Theme */
[data-theme="dark"] {
    --primary-color: #60a5fa;
    --secondary-color: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    background-color: #111827;
}

[data-theme="dark"] .header,
[data-theme="dark"] .side-nav,
[data-theme="dark"] .date-card,
[data-theme="dark"] .quick-facts,
[data-theme="dark"] .today-card {
    background: #1f2937;
}

[data-theme="dark"] .styled-select,
[data-theme="dark"] .styled-input {
    background: #374151;
    border-color: #4b5563;
    color: var(--text-primary);
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}
/* Tab Container */
.card-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 0.5rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    position: relative;
}

/* Tab Buttons */
.tab-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

/* Active Tab Indicator */
.card-tabs::before {
    content: '';
    position: absolute;
    width: calc(50% - 1rem);
    height: calc(100% - 1rem);
    background: white;
    border-radius: var(--border-radius);
    top: 0.5rem;
    left: 0.5rem;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card-tabs[data-active-tab="gregorian"]::before {
    transform: translateX(calc(100% + 1rem));
}

/* Active Tab Styles */
/* .tab-btn.active {
    color: var(--primary-color);
} */

.tab-btn i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.tab-btn:hover i {
    transform: scale(1.1);
}

/* Tab Content */
.tab-content {
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.tab-content.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Dark Theme Support */
[data-theme="dark"] .card-tabs::before {
    background: var(--secondary-color);
}

[data-theme="dark"] .card-tabs {
    background: #374151;
}

/* Responsive Adjustments */
@media (max-width: 480px) {
    .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .tab-btn span {
        display: none;
    }
    
    .tab-btn i {
        font-size: 1.4rem;
    }
}
/* Main content adjustments */
.main-content {
    margin-left: 250px; /* Match your side-nav width */
    padding: 20px;
    min-height: calc(100vh - 160px); /* Adjust based on header + footer height */
    position: relative;
    padding-bottom: 80px; /* Add space for footer */
}

/* Footer styling */
.footer {
    position: relative;
    margin-left: 250px; /* Match your side-nav width */
    background-color: var(--background-secondary);
    padding: 20px;
    bottom: 0;
    width: calc(100% - 250px); /* Full width minus side-nav */
    border-top: 1px solid var(--border-color);
}

.footer-content {
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

.copyright a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Media query for mobile responsiveness */
@media screen and (max-width: 768px) {
    .main-content {
        margin-left: 0;
        padding-bottom: 100px;
    }

    .footer {
        margin-left: 0;
        width: 100%;
    }
}

/* When side nav is collapsed/hidden */
.side-nav-collapsed .main-content,
.side-nav-collapsed .footer {
    margin-left: 0;
    width: 100%;
    transition: margin-left 0.3s ease, width 0.3s ease;
}