/* ===============================================
   CSS CUSTOM PROPERTIES (Design System)
   =============================================== */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #13131a;
    --color-bg-card: rgba(25, 25, 35, 0.6);

    --color-text-primary: #ffffff;
    --color-text-secondary: #b4b4c8;
    --color-text-muted: #7a7a8c;

    --color-accent-1: #6366f1;
    --color-accent-2: #8b5cf6;
    --color-accent-3: #ec4899;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===============================================
   TYPOGRAPHY
   =============================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===============================================
   LAYOUT UTILITIES
   =============================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

/* ===============================================
   NAVIGATION
   =============================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.profile-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--gradient-primary);
    padding: 2px;
    transition: all var(--transition-normal);
}

.profile-img:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.profile-name {
    font-weight: 600;
    font-size: 1.1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a:hover {
    color: var(--color-text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after {
    width: 100%;
}

/* ===============================================
   HERO SECTION
   =============================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }

    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

/* Hero Visual - Floating Cards */
.hero-visual {
    position: relative;
    height: 500px;
}

.floating-card {
    position: absolute;
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.card-1 {
    width: 280px;
    height: 180px;
    top: 0;
    left: 50px;
    animation: floatCard1 6s ease-in-out infinite;
}

.card-2 {
    width: 240px;
    height: 160px;
    top: 200px;
    left: 0;
    animation: floatCard2 7s ease-in-out infinite;
}

.card-3 {
    width: 200px;
    height: 140px;
    top: 120px;
    right: 20px;
    animation: floatCard3 8s ease-in-out infinite;
}

@keyframes floatCard1 {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

@keyframes floatCard2 {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-30px) rotate(-2deg);
    }
}

@keyframes floatCard3 {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-25px) rotate(3deg);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================================
   BUTTONS
   =============================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

/* ===============================================
   SECTIONS
   =============================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* ===============================================
   APPLICATIONS SECTION
   =============================================== */
.apps-section {
    background: var(--color-bg-secondary);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.app-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.app-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: var(--shadow-glow);
}

.app-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
}

.app-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.app-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-free {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-paid {
    background: rgba(236, 72, 153, 0.2);
    color: #ec4899;
    border: 1px solid rgba(236, 72, 153, 0.3);
}

.app-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.app-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-accent-1);
    border-radius: 50px;
    font-size: 0.85rem;
}

.app-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.app-link {
    flex: 1;
    text-align: center;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.link-demo {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-accent-1);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.link-demo:hover {
    background: rgba(99, 102, 241, 0.25);
}

.link-download {
    background: var(--gradient-primary);
    color: white;
}

.link-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* ===============================================
   ABOUT SECTION
   =============================================== */
.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.skill-tag {
    padding: 0.5rem 1.25rem;
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--color-text-primary);
    font-weight: 500;
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.stats-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.stats-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.5);
}

.stats-card h3 {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stats-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ===============================================
   CONTACT SECTION
   =============================================== */
.contact-section {
    background: var(--color-bg-secondary);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.contact-item {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.5);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.contact-details h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.contact-details p {
    color: var(--color-text-secondary);
}

/* ===============================================
   FOOTER
   =============================================== */
.footer {
    background: var(--color-bg-primary);
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: var(--color-text-muted);
}

/* ===============================================
   SCROLL ANIMATIONS
   =============================================== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===============================================
   FLOATING RADIO PLAYER
   =============================================== */
.radio-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 280px;
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: all var(--transition-normal);
}

.radio-player:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.3);
}

.radio-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    cursor: pointer;
}

.radio-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.radio-toggle {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    transition: transform var(--transition-fast);
}

.radio-toggle:hover {
    transform: scale(1.1);
}

.radio-toggle.collapsed span {
    transform: rotate(-180deg);
    display: inline-block;
}

.radio-content {
    padding: 1rem;
    max-height: 400px;
    overflow-y: auto;
    transition: all var(--transition-normal);
}

.radio-content.hidden {
    max-height: 0;
    padding: 0 1rem;
    overflow: hidden;
}

.radio-stations {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.radio-station {
    padding: 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.radio-station:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateX(5px);
}

.radio-station.active {
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.radio-controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: center;
}

.radio-btn {
    flex: 1;
    padding: 0.625rem;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
}

.radio-btn:hover {
    background: rgba(99, 102, 241, 0.25);
    transform: translateY(-2px);
}

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

.volume-slider {
    width: 100%;
    height: 6px;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 10px;
    outline: none;
    -webkit-appearance: none;
    margin-top: 0.5rem;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.now-playing {
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-style: italic;
}

.now-playing.playing {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

/* ===============================================
   WIDGETS (WORLD CLOCK & WEATHER)
   =============================================== */
.widget {
    position: fixed;
    bottom: 20px;
    width: 280px;
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 998;
    transition: all var(--transition-normal);
}

.world-clock-widget {
    right: 320px;
}

.weather-widget {
    right: 620px;
}

.widget:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.3);
}

.widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    cursor: pointer;
}

.widget-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.widget-icon {
    font-size: 0.85rem;
}

.widget-toggle {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    transition: transform var(--transition-fast);
}

.widget-toggle:hover {
    transform: scale(1.1);
}

.widget-toggle.collapsed span {
    transform: rotate(-180deg);
    display: inline-block;
}

.widget-content {
    padding: 1rem;
    max-height: 400px;
    overflow-y: auto;
    transition: all var(--transition-normal);
}

.widget-content.hidden {
    max-height: 0;
    padding: 0 1rem;
    overflow: hidden;
}

/* World Clock Styles */
.clock-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    transition: background var(--transition-fast);
}

.clock-item:hover {
    background: rgba(99, 102, 241, 0.15);
}

.city-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.city-time {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--color-accent-1);
    font-weight: 600;
}

/* Weather Styles */
.weather-location {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.city-input {
    flex: 1;
    padding: 0.625rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-size: 0.9rem;
}

.city-input:focus {
    outline: none;
    border-color: rgba(99, 102, 241, 0.5);
    background: rgba(255, 255, 255, 0.08);
}

.get-weather-btn {
    padding: 0.625rem 1.25rem;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.get-weather-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.weather-info {
    text-align: center;
    padding: 1rem;
}

.weather-hint {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

.weather-data {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.weather-main {
    font-size: 2rem;
    margin: 0.5rem 0;
}

.weather-temp {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.weather-desc {
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-transform: capitalize;
}

.weather-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.weather-detail-item {
    padding: 0.5rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.weather-detail-label {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.weather-detail-value {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .apps-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }
}