* {
    box-sizing: border-box;
    color: white;
}

:root {
    --window-frame-height: 36px;
    --window-control-size: 28px;
}

p {
    margin: 0;
}

.hidden {
    display: none !important;
}

body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    margin: 0;
    padding: 0;
}

.channels-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 10% 20%, rgba(124, 58, 237, 0.16), transparent 30%),
        radial-gradient(circle at 85% 10%, rgba(59, 130, 246, 0.18), transparent 28%), #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(24px, 4vw, 48px);
}

.window-frame {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--window-frame-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: rgba(15, 23, 42, 0.9);
    border-bottom: 1px solid rgba(30, 41, 59, 0.7);
    -webkit-app-region: drag;
}

.window-frame-title {
    font-size: 12px;
    letter-spacing: 0.3px;
    color: #cbd5f5;
    text-transform: uppercase;
}

.window-frame-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    -webkit-app-region: no-drag;
}

.window-control {
    width: var(--window-control-size);
    height: var(--window-control-size);
    padding: 0;
    border-radius: 6px;
    background: rgba(148, 163, 184, 0.2);
    border: 1px solid rgba(148, 163, 184, 0.25);
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1;
    display: grid;
    place-items: center;
    box-shadow: none;
}

.window-control:hover {
    background: rgba(148, 163, 184, 0.35);
}

.window-control:active {
    transform: none;
}

.window-control-close {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.4);
}

.window-control-close:hover {
    background: rgba(239, 68, 68, 0.5);
}

.channels-shell {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 700px;
}

.channels-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.channels-main {
    display: flex;
    justify-content: center;
}

.channel-card {
    width: 100%;
    background: rgba(11, 18, 32, 0.95);
    border: 1px solid #1f2937;
    border-radius: 16px;
    padding: clamp(20px, 3vw, 32px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.channel-card h1 {
    margin: 6px 0 4px;
}

.channel-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 6px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-title {
    font-weight: 700;
    font-size: 18px;
}

.brand-subtitle {
    color: #94a3b8;
    font-size: 13px;
}

.text-input {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #1f2937;
    background: #0f172a;
    color: #e2e8f0;
    font-size: 15px;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.text-input:focus {
    outline: none;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}

.text-input:disabled,
.text-input[aria-disabled="true"] {
    background: #020617;
    border-color: #334155;
    color: #64748b;
    cursor: not-allowed;
    box-shadow: none;
}

.text-input:disabled::placeholder {
    color: #475569;
}

.button,
button {
    background: #7c3aed;
    color: white;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.25);
}

.button:disabled,
button:disabled,
.button[aria-disabled="true"] {
    background: #a78bfa;
    color: #e5e7eb;
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.7;
}

.button:disabled:hover,
button:disabled:hover {
    transform: none;
}

.button.block {
    width: 100%;
}

.muted {
    color: #94a3b8;
    font-size: 0.9em;
}