:root {
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --warning-color: #f59e0b;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    transition: background-color 0.5s ease, color 0.5s ease;
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.15) 0px, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

body.light-mode {
    --bg-color: #f1f5f9;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --primary-color: #2563eb;
    background-image: none;
}

body.light-mode .splash-screen {
    background: linear-gradient(45deg, #e2e8f0, #bae6fd, #7dd3fc, #e2e8f0);
    background-size: 400% 400%;
}

.app-container {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Status Bar */
.status-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-self: start;
}

.logo-dot {
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-color);
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.device-id-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    justify-self: end;
}

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

.id-value {
    font-family: monospace;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    opacity: 0.7;
    transition: opacity 0.2s, transform 0.2s;
}

.icon-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

.theme-btn {
    font-size: 1.25rem;
    margin-left: 0.5rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-self: center;
}

.avatar-canvas {
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    display: block;
}
body.light-mode .avatar-canvas {
    background-color: rgba(0,0,0,0.1);
}

.large-avatar {
    margin-bottom: 0.5rem;
}

.codename-input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    padding: 0.35rem 0.5rem;
    border-radius: 0.25rem;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    width: 150px;
    outline: none;
    transition: all 0.2s;
}
body.light-mode .codename-input {
    background: rgba(255, 255, 255, 0.5);
}
.codename-input:focus {
    border-color: var(--primary-color);
}

.peer-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.peer-name {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Panels */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.hidden {
    display: none !important;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* Input Group */
.input-group {
    display: flex;
    gap: 1rem;
}

input[type="text"] {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    color: var(--text-main);
    font-family: monospace;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

input[type="text"]::placeholder {
    color: rgba(148, 163, 184, 0.5);
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

button {
    font-family: inherit;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}

.primary-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.secondary-btn {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.danger-btn {
    background-color: var(--danger-color);
    color: white;
}

.danger-btn:hover {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Call Panel specific */
.call-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.status-badge.connecting {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-badge.active {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

.status-badge.disconnected {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.peer-info {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Visualizer */
.visualizer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}
.visualizer-header h3 {
    font-size: 1rem;
    font-weight: 600;
}
.styled-select {
    background: var(--glass-bg);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 0.35rem 0.5rem;
    border-radius: 0.25rem;
    outline: none;
    font-family: inherit;
    cursor: pointer;
}
body.light-mode .styled-select {
    color: var(--text-main);
}
.visualizer-container {
    width: 100%;
    height: 120px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--glass-border);
}

canvas#audio-visualizer {
    width: 100%;
    height: 100%;
    display: block;
}

.call-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.control-btn {
    min-width: 120px;
}

.error-msg {
    color: var(--danger-color);
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(45deg, #0f172a, #1e1b4b, #312e81, #0f172a);
    background-size: 400% 400%;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
    animation: trippy-bg 10s ease infinite;
    overflow: hidden;
}

@keyframes trippy-bg {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

#splash-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
}

.splash-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.glitch {
    position: relative;
    color: white;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Subtitle glitch sizing */
#splash-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.glitch-anim {
    animation: glitch-skew 1s infinite linear alternate-reverse;
}

.glitch-anim::before,
.glitch-anim::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch-anim::before {
    left: 2px;
    text-shadow: -2px 0 #ff00c1;
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch-anim::after {
    left: -2px;
    text-shadow: -2px 0 #00fff9, 2px 2px #ff00c1;
    animation: glitch-anim2 1s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(10px, 9999px, 83px, 0); }
    20% { clip: rect(32px, 9999px, 14px, 0); }
    40% { clip: rect(98px, 9999px, 54px, 0); }
    60% { clip: rect(48px, 9999px, 2px, 0); }
    80% { clip: rect(15px, 9999px, 49px, 0); }
    100% { clip: rect(82px, 9999px, 32px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    20% { clip: rect(14px, 9999px, 54px, 0); }
    40% { clip: rect(89px, 9999px, 12px, 0); }
    60% { clip: rect(3px, 9999px, 78px, 0); }
    80% { clip: rect(42px, 9999px, 23px, 0); }
    100% { clip: rect(96px, 9999px, 67px, 0); }
}

@keyframes glitch-skew {
    0% { transform: skew(0deg); }
    10% { transform: skew(-2deg); }
    20% { transform: skew(1deg); }
    30% { transform: skew(-1deg); }
    40% { transform: skew(2deg); }
    50% { transform: skew(-2deg); }
    60% { transform: skew(0deg); }
    70% { transform: skew(1deg); }
    80% { transform: skew(-1deg); }
    90% { transform: skew(2deg); }
    100% { transform: skew(0deg); }
}

/* Loader */
.loader {
    width: 48px;
    height: 48px;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-bottom-color: var(--primary-color);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    margin-top: 2rem;
}

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

/* Mobile Responsiveness */
@media (max-width: 600px) {
    .app-container {
        padding: 1rem;
    }
    .status-bar {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    .brand {
        justify-content: space-between;
    }
    .user-profile {
        justify-content: space-between;
    }
    .device-id-container {
        justify-content: space-between;
    }
    .glitch {
        font-size: 2rem;
    }
    #splash-subtitle {
        font-size: 1.2rem;
    }
    .input-group {
        flex-direction: column;
    }
    .call-controls {
        flex-direction: column;
    }
    .control-btn {
        width: 100%;
    }
}

/* Screen Glitch Effect for Burn ID */
.active-glitch {
    animation: screen-glitch 0.3s ease-in-out;
}

@keyframes screen-glitch {
    0% { filter: invert(1) hue-rotate(90deg); transform: translate(5px, 5px) skew(5deg); }
    20% { filter: invert(0) hue-rotate(0deg); transform: translate(-5px, -2px) skew(-5deg); }
    40% { filter: invert(1) hue-rotate(180deg); transform: translate(2px, 5px) skew(2deg); }
    60% { filter: invert(0) hue-rotate(0deg); transform: translate(-5px, 0px) skew(-2deg); }
    80% { filter: invert(1) hue-rotate(270deg); transform: translate(3px, -3px) skew(4deg); }
    100% { filter: invert(0) hue-rotate(0deg); transform: translate(0, 0) skew(0deg); }
}