/* Premium Neon Text Animator Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&display=swap');

:root {
    --bg-color: #050505;
    --panel-bg: rgba(10, 10, 10, 0.92);
    --panel-border: rgba(255, 255, 255, 0.08);
    --accent-color: #00f3ff;
    --accent-glow: rgba(0, 243, 255, 0.3);
    --text-color: #ffffff;
    --text-muted: #888888;
    --glass-blur: 40px;
    --header-height: 100px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top Header */
.top-header {
    height: var(--header-height);
    width: 100%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--panel-border);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 48px;
    z-index: 100;
    position: relative;
}

.header-left {
    display: flex;
    justify-content: flex-start;
    gap: 20px;
}

.header-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 20px;
}

/* Main Layout */
.app-container {
    width: 100%;
    height: calc(100vh - var(--header-height));
    display: flex;
    flex-direction: row;
}

/* Preview Area */
#preview-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
    background: #000;
}

/* Controls Panel */
.controls-panel {
    width: 520px;
    height: 100%;
    background: var(--panel-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-left: 1px solid var(--panel-border);
    padding: 0;
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.panel-content {
    padding: 48px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.panel-content::-webkit-scrollbar {
    width: 4px;
}

.panel-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

section {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

h2 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--accent-color);
    margin-bottom: 10px;
    opacity: 0.9;
    font-weight: 800;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

label {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

label span {
    color: var(--accent-color);
    font-family: 'Orbitron', sans-serif;
}

input[type="text"],
select {
    width: 100%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 18px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
select:focus {
    border-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 5px rgba(0, 243, 255, 0.15);
}

select option {
    background-color: #0a0a0a;
    color: #fff;
    padding: 15px;
}

input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 22px;
    width: 22px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    margin-top: -9px;
    box-shadow: 0 0 15px var(--accent-color);
    border: 2px solid #fff;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 100%;
    height: 56px;
    border-radius: 16px;
    cursor: pointer;
    background: none;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--panel-border);
    border-radius: 16px;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 12px;
}

.btn-export {
    background: linear-gradient(135deg, #00f3ff, #0066ff);
    color: #fff;
    box-shadow: 0 8px 25px rgba(0, 243, 255, 0.3);
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 243, 255, 0.5);
}

.btn-random {
    background: linear-gradient(135deg, #ff00ff, #7000ff);
    color: #fff;
    box-shadow: 0 8px 25px rgba(255, 0, 255, 0.3);
}

.btn-random:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(255, 0, 255, 0.5);
}

.animation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.anim-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--panel-border);
    padding: 16px;
    border-radius: 16px;
    color: var(--text-color);
    font-size: 11px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.anim-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

.anim-btn.active {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.6);
}

/* Header/Logo */
.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 28px;
    font-weight: 900;
    color: #fff;
    letter-spacing: 8px;
    text-transform: uppercase;
    text-shadow:
        0 0 10px #fff,
        0 0 20px var(--accent-color),
        0 0 40px var(--accent-color);
    animation: pulsate-logo 3s infinite alternate;
}

@keyframes pulsate-logo {
    from {
        opacity: 0.8;
        transform: scale(0.96);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Navigation Links */
.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .controls-panel {
        width: 480px;
    }
}

@media (max-width: 768px) {
    body {
        overflow-y: auto;
    }

    .top-header {
        padding: 0 24px;
        height: auto;
        padding: 20px;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .app-container {
        flex-direction: column;
        height: auto;
    }

    #preview-container {
        height: 50vh;
        min-height: 350px;
        padding: 20px;
    }

    .controls-panel {
        width: 100%;
        height: auto;
        border-left: none;
        border-radius: 40px 40px 0 0;
    }

    .panel-content {
        padding: 40px 24px;
        gap: 40px;
    }
}