:root {
    --bg-dark: #0a0a0c;
    --panel-bg: rgba(22, 23, 28, 0.6);
    --panel-border: rgba(255, 255, 255, 0.08);
    --text-main: #fcfcfc;
    --text-muted: #9499a3;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --glow-primary: rgba(139, 92, 246, 0.4);
    --glow-secondary: rgba(59, 130, 246, 0.4);
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
    top: -200px;
    right: -100px;
}

.glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

.glow-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
    top: 40%;
    left: 40%;
    opacity: 0.15;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* Container & Header */
.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 10;
}

.header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 1rem;
}

.logo-text {
    height: 200px;
    width: auto;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Panels */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1rem;
}

.panel h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: 0.02em;
}

.status-indicator {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.status-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #22c55e;
    box-shadow: 0 0 8px #22c55e;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    70% { box-shadow: 0 0 0 4px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* Buttons */
.button-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.button-grid.two-col {
    grid-template-columns: 1fr 1fr;
}

@media (min-width: 480px) {
    .button-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.btn {
    position: relative;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    border-radius: 12px;
    overflow: hidden;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-main);
    transition: all var(--transition-fast);
    outline: none;
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 2;
    background: rgba(20, 21, 26, 0.8);
    border-radius: inherit;
    transition: all var(--transition-fast);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

.btn::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    z-index: 0;
    border-radius: 14px;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), #c084fc);
    padding: 1px;
}

.btn-primary .btn-content {
    background: rgba(20, 21, 26, 0.9);
}

.btn-primary:hover .btn-content {
    background: rgba(20, 21, 26, 0.4);
}

.primary-glow:hover {
    box-shadow: 0 0 20px var(--glow-primary);
}

/* Secondary Button */
.btn-secondary {
    background: linear-gradient(135deg, var(--accent-blue), #60a5fa);
    padding: 1px;
}

.btn-secondary .btn-content {
    background: rgba(20, 21, 26, 0.9);
}

.btn-secondary:hover .btn-content {
    background: rgba(20, 21, 26, 0.4);
}

.secondary-glow:hover {
    box-shadow: 0 0 20px var(--glow-secondary);
}

/* Outline Buttons */
.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.02);
}

.btn-outline .btn-content {
    background: transparent;
}

.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

/* Glass Buttons */
.btn-glass {
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.03);
}

.btn-glass .btn-content {
    background: transparent;
}

.btn-light-on:hover {
    background: rgba(250, 204, 21, 0.15); /* Yellow tint */
    border-color: rgba(250, 204, 21, 0.3);
    color: #fef08a;
    box-shadow: 0 0 15px rgba(250, 204, 21, 0.2);
}

.btn-light-off:hover {
    background: rgba(55, 65, 81, 0.3); /* Dark gray tint */
    border-color: rgba(107, 114, 128, 0.5);
    color: #d1d5db;
}

/* Loading State */
.btn.loading .btn-content {
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-top: -10px;
    margin-left: -10px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spinner 0.8s linear infinite;
    z-index: 3;
}

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

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.toast {
    background: rgba(20, 21, 26, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translateX(120%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}