:root {
    --bg-a: #f4f6fb;
    --bg-b: #dfe8fb;
    --bg-c: #f7f8fc;
    --panel: rgba(255, 255, 255, 0.86);
    --panel-strong: #ffffff;
    --panel-border: rgba(24, 36, 62, 0.16);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --title: #0f172a;
    --divider: rgba(15, 23, 42, 0.14);
    --focus-ring: rgba(7, 88, 202, 0.34);
    --badge-bg: rgba(15, 23, 42, 0.08);
    --badge-text: #1f2937;
    --card-shadow: 0 18px 46px rgba(10, 21, 41, 0.18);
}

[data-bs-theme="dark"] {
    --bg-a: #070d1a;
    --bg-b: #14223f;
    --bg-c: #0b1327;
    --panel: rgba(14, 22, 40, 0.9);
    --panel-strong: #101b33;
    --panel-border: rgba(163, 183, 214, 0.2);
    --text-primary: #e5e7eb;
    --text-secondary: #a9b4c7;
    --title: #f8fafc;
    --divider: rgba(174, 195, 226, 0.22);
    --focus-ring: rgba(88, 151, 255, 0.42);
    --badge-bg: rgba(177, 196, 225, 0.16);
    --badge-text: #dbe8ff;
    --card-shadow: 0 20px 56px rgba(0, 0, 0, 0.42);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body.emergency-body {
    margin: 0;
    color: var(--text-primary);
    background:
        radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--bg-b) 82%, transparent) 0%, transparent 48%),
        radial-gradient(circle at 82% 84%, color-mix(in srgb, var(--bg-b) 72%, transparent) 0%, transparent 44%),
        linear-gradient(145deg, var(--bg-a), var(--bg-c));
    font-family: 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.45;
}

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: clamp(14px, 2.8vw, 32px);
}

.app-header,
.app-footer {
    max-width: 920px;
    width: 100%;
    margin: 0 auto;
    text-align: center;
}

.app-title {
    appearance: none;
    border: 0;
    background: none;
    color: var(--title);
    font-family: 'Orbitron', 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: clamp(1.35rem, 2.2vw, 2.05rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0;
    margin: 0;
}

.app-title:hover {
    opacity: 0.9;
}

.app-title:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem var(--focus-ring);
    border-radius: 12px;
}

.app-subtitle {
    margin: 0.45rem 0 0;
    color: var(--text-secondary);
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
}

.content-panel {
    width: min(100%, 860px);
    margin: 0 auto;
    border-radius: 20px;
    border: 1px solid var(--panel-border);
    background: var(--panel);
    backdrop-filter: blur(5px);
    box-shadow: var(--card-shadow);
    padding: clamp(14px, 2.5vw, 24px);
}

.app-footer {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#content {
    color: var(--text-primary);
}

#content .btn-group-vertical {
    display: grid !important;
    width: 100%;
    gap: 0.72rem;
}

#content .btn-group-vertical .btn {
    border-radius: 14px;
    border: 1px solid transparent;
    padding: 0.92rem 1rem;
    min-height: 3.1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
    transition: transform 140ms ease, box-shadow 140ms ease;
}

#content .btn-group-vertical .btn:hover {
    transform: translateY(-1px);
}

#content .btn-group-vertical .btn:focus-visible {
    box-shadow: 0 0 0 0.25rem var(--focus-ring);
}

#content .btn-danger {
    background: linear-gradient(135deg, #9f0f0f, #cc1515);
    border-color: #d03838;
}

#content .btn-warning {
    background: linear-gradient(135deg, #b86d00, #d28f12);
    border-color: #d9a54d;
    color: #fff;
}

#content .btn-info {
    background: linear-gradient(135deg, #0f5f8f, #1987ba);
    border-color: #3da0cb;
    color: #fff;
}

#content .btn-success {
    background: linear-gradient(135deg, #1f7f3f, #27a052);
    border-color: #4bb870;
}

#content .btn-light {
    background: var(--panel-strong);
    color: var(--text-primary);
    border-color: var(--panel-border);
}

#content .badge {
    font-size: 0.76rem;
    font-weight: 700;
    border-radius: 999px;
}

#content .badge.text-bg-light {
    background: var(--badge-bg) !important;
    color: var(--badge-text) !important;
    border: 1px solid var(--panel-border);
}

#content .badge.text-bg-info {
    background: rgba(46, 164, 255, 0.2) !important;
    color: var(--text-primary) !important;
}

#content .form-check {
    display: flex;
    align-items: flex-start;
    gap: 0.78rem;
    margin: 0 0 0.7rem;
    padding: 0.78rem 0.9rem;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
    background: var(--panel-strong);
}

#content .form-check:last-child {
    margin-bottom: 0;
}

#content .form-check-input {
    margin: 0 !important;
    flex: 0 0 auto;
    width: 2.35em;
    height: 1.3em;
    cursor: pointer;
}

#content .form-check-input:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem var(--focus-ring);
}

#content .form-check-label {
    flex: 1 1 auto;
    color: var(--text-primary);
    line-height: 1.28;
}

#content .form-check-label .text {
    font-weight: 600;
}

#content .form-check-label small {
    display: block;
    margin-top: 0.15rem;
    color: var(--text-secondary) !important;
    font-size: 0.89rem;
}

#content .text-secondary-emphasis {
    color: var(--text-secondary) !important;
}

#content .text-decoration-line-through {
    text-decoration-thickness: 2px;
    opacity: 0.72;
}

#content hr {
    border-color: var(--divider);
    opacity: 1;
    margin: 1rem 0;
}

#content .alert {
    border-radius: 12px;
    margin-bottom: 0;
}

@media (max-width: 767.98px) {
    .app-shell {
        padding: 12px;
        gap: 0.75rem;
    }

    .content-panel {
        border-radius: 16px;
        padding: 12px;
    }

    #content .btn-group-vertical .btn {
        font-size: 0.96rem;
        min-height: 2.9rem;
        padding: 0.78rem 0.88rem;
    }

    #content .form-check {
        padding: 0.66rem 0.72rem;
    }

    #content .form-check-input {
        width: 2.2em;
    }
}

@media (min-width: 768px) and (max-width: 1199.98px) {
    .content-panel {
        width: min(100%, 92vw);
    }
}