/* CSS Variables */
:root {
    /* Light Theme Colors */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Time-based Themes with Unique Backgrounds */
[data-time="dawn"] {
    --gradient-start: #ff6b6b;
    --gradient-end: #feca57;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
}

[data-time="morning"] {
    --gradient-start: #74b9ff;
    --gradient-end: #0984e3;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
}

[data-time="noon"] {
    --gradient-start: #00b894;
    --gradient-end: #00cec9;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
}

[data-time="afternoon"] {
    --gradient-start: #fdcb6e;
    --gradient-end: #e17055;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
}

[data-time="dusk"] {
    --gradient-start: #e84393;
    --gradient-end: #fd79a8;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
}

[data-time="night"] {
    --gradient-start: #2d3436;
    --gradient-end: #636e72;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
}

[data-time="midnight"] {
    --gradient-start: #0c0c0c;
    --gradient-end: #1a1a2e;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-slow);
    position: relative;
}

/* Animated Sky Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: inherit;
    z-index: -2;
}

/* Unique Background Patterns for Each Time */
[data-time="dawn"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 193, 7, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, rgba(255, 107, 107, 0.2) 0%, transparent 50%);
    animation: dawnGlow 8s ease-in-out infinite;
    z-index: -1;
}

[data-time="morning"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.6) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(116, 185, 255, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 50% 60%, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
    animation: morningFloat 12s ease-in-out infinite;
    z-index: -1;
}

[data-time="noon"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.8) 0%, transparent 60%),
        radial-gradient(circle at 20% 50%, rgba(0, 184, 148, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 206, 201, 0.3) 0%, transparent 50%);
    animation: noonRadiate 10s ease-in-out infinite;
    z-index: -1;
}

[data-time="afternoon"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 60% 30%, rgba(253, 203, 110, 0.5) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, rgba(225, 112, 85, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 193, 7, 0.3) 0%, transparent 50%);
    animation: afternoonWarm 15s ease-in-out infinite;
    z-index: -1;
}

[data-time="dusk"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 30% 40%, rgba(232, 67, 147, 0.6) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(253, 121, 168, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(255, 107, 107, 0.3) 0%, transparent 50%);
    animation: duskGlow 6s ease-in-out infinite;
    z-index: -1;
}

[data-time="night"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #fbbf24, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #f59e0b, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #fbbf24, transparent),
        radial-gradient(1px 1px at 200px 60px, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(2px 2px at 240px 90px, #f59e0b, transparent),
        radial-gradient(1px 1px at 280px 40px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 320px 70px, #fbbf24, transparent),
        radial-gradient(1px 1px at 360px 20px, rgba(255, 255, 255, 0.8), transparent);
    animation: nightTwinkle 4s ease-in-out infinite;
    z-index: -1;
}

[data-time="midnight"] body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(1px 1px at 15px 25px, #6366f1, transparent),
        radial-gradient(1px 1px at 35px 65px, rgba(99, 102, 241, 0.8), transparent),
        radial-gradient(1px 1px at 85px 35px, #8b5cf6, transparent),
        radial-gradient(1px 1px at 125px 75px, rgba(139, 92, 246, 0.6), transparent),
        radial-gradient(1px 1px at 155px 25px, #6366f1, transparent),
        radial-gradient(1px 1px at 195px 55px, rgba(99, 102, 241, 0.8), transparent),
        radial-gradient(1px 1px at 235px 85px, #8b5cf6, transparent),
        radial-gradient(1px 1px at 275px 35px, rgba(139, 92, 246, 0.6), transparent),
        radial-gradient(1px 1px at 315px 65px, #6366f1, transparent),
        radial-gradient(1px 1px at 355px 15px, rgba(99, 102, 241, 0.8), transparent);
    animation: midnightDeep 6s ease-in-out infinite;
    z-index: -1;
}

/* Background Animations */
@keyframes dawnGlow {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

@keyframes morningFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

@keyframes noonRadiate {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

@keyframes afternoonWarm {
    0%, 100% { opacity: 0.5; transform: translateX(0px); }
    50% { opacity: 0.8; transform: translateX(5px); }
}

@keyframes duskGlow {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.2); }
}

@keyframes nightTwinkle {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

@keyframes midnightDeep {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Sun/Moon Animation */
.sun-moon {
    position: fixed;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    z-index: -1;
    animation: sunMoonMove 24s linear infinite;
}

[data-time="dawn"] .sun-moon,
[data-time="morning"] .sun-moon,
[data-time="noon"] .sun-moon,
[data-time="afternoon"] .sun-moon {
    background: radial-gradient(circle, #ffd700, #ff8c00);
    box-shadow: 0 0 40px rgba(255, 215, 0, 0.6);
}

[data-time="dusk"] .sun-moon {
    background: radial-gradient(circle, #ff8c00, #ff4500);
    box-shadow: 0 0 40px rgba(255, 140, 0, 0.6);
}

[data-time="night"] .sun-moon,
[data-time="midnight"] .sun-moon {
    background: radial-gradient(circle, #f0f8ff, #c0c0c0);
    box-shadow: 0 0 40px rgba(240, 248, 255, 0.6);
}

/* Container */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 1s ease-out;
}

.title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0.8;
}

/* Main Content */
.main-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Main Container - Combined Clock & Weather */
.main-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
    overflow: hidden;
    animation: slideInUp 1s ease-out 0.2s both;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.main-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: var(--radius-2xl);
    z-index: -1;
}

/* Clock Section */
.clock-section {
    text-align: center;
}

.time-display {
    margin-bottom: var(--spacing-lg);
}

.time {
    display: block;
    font-size: var(--font-size-6xl);
    font-weight: 300;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: color var(--transition-normal);
}

.date {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

/* Clock Info */
.clock-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.info-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.info-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

/* Weather Section */
.weather-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.weather-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.weather-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.weather-svg {
    width: 30px;
    height: 30px;
    color: var(--text-primary);
    animation: weather-rotate 10s linear infinite;
    transition: color var(--transition-normal);
}

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

.weather-details {
    flex: 1;
}

.temperature {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.weather-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.weather-stats {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.stat {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: color var(--transition-normal);
}

/* Divider */
.divider {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 var(--spacing-md);
}

/* Location Section */
.location-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    position: relative;
}

.location-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.location-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
    transition: color var(--transition-normal);
}

.location-details {
    flex: 1;
}

.city {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.country {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.coordinates {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    display: inline-block;
    transition: color var(--transition-normal);
}

/* Location Edit Button */
.location-edit-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.location-edit-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.location-edit-btn svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

.location-edit-btn:hover svg {
    color: var(--text-primary);
}

/* Controls */
.controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 48px;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.control-btn:active {
    transform: translateY(0);
}

.control-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    opacity: 0.8;
    animation: fadeInUp 1s ease-out 0.4s both;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    animation: float 6s ease-in-out infinite;
}

#floating-1 {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

#floating-2 {
    width: 120px;
    height: 120px;
    top: 20%;
    right: 15%;
    animation-delay: 2s;
}

#floating-3 {
    width: 60px;
    height: 60px;
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
}

#floating-4 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    right: 10%;
    animation-delay: 1s;
}

#floating-5 {
    width: 40px;
    height: 40px;
    top: 50%;
    left: 50%;
    animation-delay: 3s;
}

/* Time-based Animations */
@keyframes sunMoonMove {
    0% { 
        top: 100%; 
        left: 10%; 
        transform: translateY(0) rotate(0deg);
    }
    25% { 
        top: 20%; 
        left: 25%; 
        transform: translateY(0) rotate(90deg);
    }
    50% { 
        top: 10%; 
        left: 50%; 
        transform: translateY(0) rotate(180deg);
    }
    75% { 
        top: 20%; 
        left: 75%; 
        transform: translateY(0) rotate(270deg);
    }
    100% { 
        top: 100%; 
        left: 90%; 
        transform: translateY(0) rotate(360deg);
    }
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .title {
        font-size: var(--font-size-4xl);
    }
    
    .time {
        font-size: var(--font-size-5xl);
    }
    
    .clock-container {
        padding: var(--spacing-xl);
    }
    
    .clock-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .controls {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: var(--font-size-3xl);
    }
    
    .time {
        font-size: var(--font-size-4xl);
    }
    
    .clock-container {
        padding: var(--spacing-lg);
    }
    
    .controls {
        gap: var(--spacing-sm);
    }
    
    .control-btn {
        min-width: 40px;
        min-height: 40px;
        padding: var(--spacing-sm);
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

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

/* Selection styles */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}