/* ==========================================
   RADIO PORT - GROK STYLE DESIGN
   ========================================== */

/* Default Theme - Classic Black & White */
:root {
    /* Grok Color Palette - Pastel with Bold Accents */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    /* Accent Colors */
    --accent-primary: #000000;
    --accent-secondary: #404040;
    --accent-hover: #262626;

    /* Pastel Accents */
    --pastel-blue: #E0F2FE;
    --pastel-green: #DCFCE7;
    --pastel-purple: #F3E8FF;
    --pastel-pink: #FCE7F3;
    --pastel-yellow: #FEF3C7;

    /* Spacing */
    --section-padding: 120px;
    --section-padding-mobile: 60px;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Animations */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme 2 - Midnight Dark */
[data-theme="theme2"] {
    --white: #0A0A0A;
    --black: #FFFFFF;
    --gray-50: #171717;
    --gray-100: #1F1F1F;
    --gray-200: #2A2A2A;
    --gray-300: #3A3A3A;
    --gray-400: #6B6B6B;
    --gray-500: #8F8F8F;
    --gray-600: #B8B8B8;
    --gray-700: #D4D4D4;
    --gray-800: #E8E8E8;
    --gray-900: #F5F5F5;

    --accent-primary: #FFFFFF;
    --accent-secondary: #E5E5E5;
    --accent-hover: #D4D4D4;

    --pastel-blue: #1E3A5F;
    --pastel-green: #1E3A2F;
    --pastel-purple: #2D1E3A;
    --pastel-pink: #3A1E2D;
    --pastel-yellow: #3A2E1E;
}

/* Theme 3 - Ocean Blue */
[data-theme="theme3"] {
    --white: #F0F9FF;
    --black: #0C4A6E;
    --gray-50: #F0F9FF;
    --gray-100: #E0F2FE;
    --gray-200: #BAE6FD;
    --gray-300: #7DD3FC;
    --gray-400: #38BDF8;
    --gray-500: #0EA5E9;
    --gray-600: #0284C7;
    --gray-700: #0369A1;
    --gray-800: #075985;
    --gray-900: #0C4A6E;

    --accent-primary: #0C4A6E;
    --accent-secondary: #0369A1;
    --accent-hover: #075985;

    --pastel-blue: #BAE6FD;
    --pastel-green: #A7F3D0;
    --pastel-purple: #DDD6FE;
    --pastel-pink: #FBCFE8;
    --pastel-yellow: #FDE68A;
}

/* Theme 4 - Forest Green */
[data-theme="theme4"] {
    --white: #F0FDF4;
    --black: #14532D;
    --gray-50: #F0FDF4;
    --gray-100: #DCFCE7;
    --gray-200: #BBF7D0;
    --gray-300: #86EFAC;
    --gray-400: #4ADE80;
    --gray-500: #22C55E;
    --gray-600: #16A34A;
    --gray-700: #15803D;
    --gray-800: #166534;
    --gray-900: #14532D;

    --accent-primary: #14532D;
    --accent-secondary: #15803D;
    --accent-hover: #166534;

    --pastel-blue: #BFDBFE;
    --pastel-green: #BBF7D0;
    --pastel-purple: #E9D5FF;
    --pastel-pink: #FBCFE8;
    --pastel-yellow: #FEF08A;
}

/* Theme 5 - Royal Purple */
[data-theme="theme5"] {
    --white: #FAF5FF;
    --black: #581C87;
    --gray-50: #FAF5FF;
    --gray-100: #F3E8FF;
    --gray-200: #E9D5FF;
    --gray-300: #D8B4FE;
    --gray-400: #C084FC;
    --gray-500: #A855F7;
    --gray-600: #9333EA;
    --gray-700: #7E22CE;
    --gray-800: #6B21A8;
    --gray-900: #581C87;

    --accent-primary: #581C87;
    --accent-secondary: #7E22CE;
    --accent-hover: #6B21A8;

    --pastel-blue: #DBEAFE;
    --pastel-green: #D1FAE5;
    --pastel-purple: #E9D5FF;
    --pastel-pink: #FCE7F3;
    --pastel-yellow: #FEF3C7;
}

/* Theme 6 - Sunset Orange */
[data-theme="theme6"] {
    --white: #FFF7ED;
    --black: #7C2D12;
    --gray-50: #FFF7ED;
    --gray-100: #FFEDD5;
    --gray-200: #FED7AA;
    --gray-300: #FDBA74;
    --gray-400: #FB923C;
    --gray-500: #F97316;
    --gray-600: #EA580C;
    --gray-700: #C2410C;
    --gray-800: #9A3412;
    --gray-900: #7C2D12;

    --accent-primary: #7C2D12;
    --accent-secondary: #C2410C;
    --accent-hover: #9A3412;

    --pastel-blue: #DBEAFE;
    --pastel-green: #D1FAE5;
    --pastel-purple: #F3E8FF;
    --pastel-pink: #FCE7F3;
    --pastel-yellow: #FED7AA;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--white);
    color: var(--gray-900);
    line-height: 1.7;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
    background: color-mix(in srgb, var(--white) 90%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.2rem 0;
    transition: var(--transition-base);
    z-index: 1000;
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--black);
    transition: var(--transition-base);
}

.logo-container {
    position: relative;
}

.logo-text {
    position: relative;
    z-index: 2;
    font-weight: 900;
    letter-spacing: -0.05em;
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav .nav-link {
    color: var(--gray-700);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1.2rem !important;
    margin: 0 0.2rem;
    border-radius: 8px;
    transition: var(--transition-base);
    letter-spacing: -0.01em;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--black);
    background-color: var(--gray-100);
}

.navbar-toggler {
    border: 2px solid var(--black);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 0, 0, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ==========================================
   GROK BUTTONS
   ========================================== */

.btn-grok {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-base);
    letter-spacing: -0.01em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn-grok::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-grok:hover::before {
    width: 300px;
    height: 300px;
}

.btn-grok-primary {
    background: var(--black);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.btn-grok-primary:hover {
    background: var(--gray-800);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
}

.btn-grok-secondary {
    background: var(--white);
    color: var(--black);
    border: 2px solid var(--black);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn-grok-secondary:hover {
    background: var(--black);
    color: var(--white);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

.btn-grok-small {
    font-size: 0.9rem;
    padding: 0.7rem 1.5rem;
    background: var(--black);
    color: var(--white);
    border-radius: 8px;
    border: none;
}

.btn-grok-small:hover {
    background: var(--gray-800);
    transform: translateY(-1px);
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--gray-200) 1px, transparent 1px),
        linear-gradient(90deg, var(--gray-200) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, var(--pastel-blue) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, var(--pastel-purple) 0%, transparent 50%);
    opacity: 0.6;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.on-air-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.6rem 1.4rem;
    background: var(--black);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #FF0000;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--gray-600);
    font-weight: 400;
    line-height: 1.8;
    max-width: 600px;
    letter-spacing: -0.01em;
}

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

/* Hero Visual */
.hero-visual {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.visual-circle {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.circle-outer,
.circle-middle,
.circle-inner {
    position: absolute;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.circle-outer {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--pastel-blue), var(--pastel-purple));
    opacity: 0.3;
    animation: rotate 20s linear infinite;
}

.circle-middle {
    width: 75%;
    height: 75%;
    background: linear-gradient(225deg, var(--pastel-pink), var(--pastel-yellow));
    opacity: 0.4;
    animation: rotate 15s linear infinite reverse;
}

.circle-inner {
    width: 50%;
    height: 50%;
    background: var(--black);
    color: var(--white);
    font-size: 4rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

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

/* Floating Elements */
.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.float-elem {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--black);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    animation: float 6s ease-in-out infinite;
}

.elem-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.elem-2 {
    top: 20%;
    right: 15%;
    animation-delay: 1.5s;
}

.elem-3 {
    bottom: 20%;
    left: 5%;
    animation-delay: 3s;
}

.elem-4 {
    bottom: 15%;
    right: 10%;
    animation-delay: 4.5s;
}

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--black);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--black);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(12px);
    }
}

/* ==========================================
   SECTION STYLES
   ========================================== */

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

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: var(--gray-900);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--black);
}

.section-description {
    font-size: 1.2rem;
    color: var(--gray-600);
    line-height: 1.8;
    font-weight: 400;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */

.about-section {
    background: linear-gradient(to bottom, var(--white) 0%, var(--gray-50) 100%);
}

.feature-card {
    padding: 2.5rem;
    background: var(--white);
    border-radius: 16px;
    border: 2px solid var(--gray-200);
    transition: var(--transition-smooth);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--black);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--black);
    color: var(--white);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.feature-text {
    color: var(--gray-600);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ==========================================
   FREQUENCIES SECTION
   ========================================== */

.frequencies-section {
    background: var(--white);
}

.frequency-card {
    padding: 2rem;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border: 2px solid var(--black);
    border-radius: 16px;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.frequency-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 0, 0, 0.05), transparent);
    transform: rotate(45deg);
    transition: var(--transition-smooth);
}

.frequency-card:hover::before {
    left: 100%;
}

.frequency-card:hover {
    transform: translateY(-10px) scale(1.02);
    background: var(--black);
    color: var(--white);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.freq-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--black);
    transition: var(--transition-base);
}

.frequency-card:hover .freq-icon {
    color: var(--white);
    transform: scale(1.1);
}

.freq-city {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.freq-number {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    margin-bottom: 0.2rem;
}

.freq-mhz {
    font-size: 1.1rem;
    font-weight: 600;
    opacity: 0.7;
}

/* ==========================================
   PROGRAMS SECTION
   ========================================== */

.programs-section {
    background: linear-gradient(to bottom, var(--gray-50) 0%, var(--white) 100%);
}

.program-card {
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    border: 2px solid var(--gray-200);
    transition: var(--transition-smooth);
    height: 100%;
}

.program-card:hover {
    transform: translateY(-8px);
    border-color: var(--black);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.program-time {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--black);
    color: var(--white);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.program-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.program-desc {
    color: var(--gray-600);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.program-host {
    color: var(--gray-700);
    font-weight: 500;
    font-size: 0.95rem;
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

.contact-section {
    background: var(--white);
}

.contact-card {
    padding: 2.5rem;
    background: var(--gray-50);
    border-radius: 16px;
    border: 2px solid var(--gray-200);
    text-align: center;
    transition: var(--transition-smooth);
    height: 100%;
}

.contact-card:hover {
    transform: translateY(-8px);
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 1.5rem;
    transition: var(--transition-base);
}

.contact-card:hover .contact-icon {
    background: var(--white);
    color: var(--black);
    transform: scale(1.1);
}

.contact-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-text {
    color: var(--gray-600);
    font-size: 1.05rem;
    line-height: 1.8;
}

.contact-card:hover .contact-text {
    color: var(--gray-200);
}

.contact-text a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

.contact-text a:hover {
    text-decoration: underline;
}

/* Social Links */
.social-title {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-icon {
    width: 50px;
    height: 50px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    text-decoration: none;
    transition: var(--transition-base);
}

.social-icon:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 2rem 0;
    margin-bottom: 100px;
}

.footer-text {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* ==========================================
   STICKY PLAYER
   ========================================== */

.player-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--black);
    color: var(--white);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.player-wrapper {
    padding: 1.2rem 0;
}

.player-logo {
    font-weight: 900;
    font-size: 1.2rem;
    padding-right: 2rem;
}

.player-info {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.now-playing {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.playing-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    opacity: 0.7;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.track-name {
    font-size: 1rem;
    font-weight: 600;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.control-btn {
    width: 45px;
    height: 45px;
    background: var(--white);
    color: var(--black);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 1.1rem;
}

.control-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.volume-slider {
    width: 100px;
    height: 4px;
    background: var(--gray-700);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Equalizer */
.equalizer {
    display: flex;
    align-items: center;
    gap: 3px;
    height: 30px;
}

.eq-bar {
    width: 3px;
    background: var(--white);
    border-radius: 2px;
    animation: equalize 1s ease-in-out infinite;
}

.eq-bar:nth-child(1) { animation-delay: 0s; height: 10px; }
.eq-bar:nth-child(2) { animation-delay: 0.2s; height: 15px; }
.eq-bar:nth-child(3) { animation-delay: 0.4s; height: 20px; }
.eq-bar:nth-child(4) { animation-delay: 0.6s; height: 15px; }
.eq-bar:nth-child(5) { animation-delay: 0.8s; height: 10px; }

@keyframes equalize {
    0%, 100% { height: 10px; }
    50% { height: 30px; }
}

.equalizer.paused .eq-bar {
    animation: none;
    height: 5px;
}

/* ==========================================
   SCROLL ANIMATIONS
   ========================================== */

.animate__animated[data-animate] {
    opacity: 0;
}

.animate__animated.animated {
    opacity: 1;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 991px) {
    :root {
        --section-padding: 80px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .visual-circle {
        width: 300px;
        height: 300px;
    }

    .circle-inner i {
        font-size: 3rem;
    }

    .player-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .player-logo {
        border-right: none;
        border-bottom: 2px solid var(--gray-700);
        padding-bottom: 0.5rem;
        padding-right: 0;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 60px;
    }

    section {
        padding: var(--section-padding-mobile) 0;
    }

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

    .btn-grok {
        width: 100%;
    }

    .visual-circle {
        width: 250px;
        height: 250px;
    }

    .float-elem {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .player-wrapper {
        padding: 1rem 0;
    }

    .player-info {
        gap: 0.8rem;
    }

    .player-controls {
        gap: 1rem;
    }

    .volume-control {
        display: none;
    }

    .control-btn {
        width: 40px;
        height: 40px;
    }

    .footer {
        margin-bottom: 120px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .frequency-card {
        padding: 1.5rem;
    }

    .freq-number {
        font-size: 2.5rem;
    }

    .player-logo {
        font-size: 1rem;
    }

    .track-name {
        font-size: 0.9rem;
    }
}

/* ==========================================
   THEME SWITCHER
   ========================================== */

.theme-switcher {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 9999;
}

.theme-toggle-btn {
    width: 50px;
    height: 50px;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: var(--transition-base);
}

.theme-toggle-btn:hover {
    transform: scale(1.1) rotate(180deg);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.3);
}

.theme-menu {
    position: absolute;
    top: 60px;
    right: 0;
    background: var(--white);
    border: 2px solid var(--black);
    border-radius: 16px;
    padding: 1rem;
    min-width: 220px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-base);
}

.theme-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-menu-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-600);
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.7rem 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.theme-option:hover {
    background: var(--gray-100);
}

.theme-option.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.theme-color {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    border: 2px solid var(--gray-300);
    flex-shrink: 0;
}

.theme-option.active .theme-color {
    border-color: var(--white);
}

.theme-name {
    font-weight: 600;
    font-size: 0.95rem;
}

/* Theme Color Previews */
.theme-option[data-theme="theme1"] .theme-color {
    background: linear-gradient(135deg, #000000 50%, #FFFFFF 50%);
}

.theme-option[data-theme="theme2"] .theme-color {
    background: linear-gradient(135deg, #0A0A0A 50%, #FFFFFF 50%);
}

.theme-option[data-theme="theme3"] .theme-color {
    background: linear-gradient(135deg, #0C4A6E 50%, #BAE6FD 50%);
}

.theme-option[data-theme="theme4"] .theme-color {
    background: linear-gradient(135deg, #14532D 50%, #BBF7D0 50%);
}

.theme-option[data-theme="theme5"] .theme-color {
    background: linear-gradient(135deg, #581C87 50%, #E9D5FF 50%);
}

.theme-option[data-theme="theme6"] .theme-color {
    background: linear-gradient(135deg, #7C2D12 50%, #FED7AA 50%);
}

/* Mobile Theme Switcher */
@media (max-width: 768px) {
    .theme-switcher {
        top: auto;
        bottom: 120px;
        right: 15px;
    }

    .theme-toggle-btn {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    .theme-menu {
        right: 0;
        min-width: 200px;
    }
}