"""
src/ui/styles.py — Custom CSS for the Codevally VLA Demo UI.

All visual styling is centralised here so that layout.py stays
focused purely on component structure.
"""

CUSTOM_CSS: str = """
/* ── Google Font ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Root & Body ── */
:root {
    --cv-blue:    #1A4BDB;
    --cv-dark:    #0D1B3E;
    --cv-accent:  #00D4FF;
    --cv-glass:   rgba(255,255,255,0.06);
    --cv-border:  rgba(255,255,255,0.1);
    --cv-success: #22C55E;
    --cv-warn:    #F59E0B;
    --cv-error:   #EF4444;
}

body, .gradio-container {
    font-family: 'Inter', system-ui, sans-serif !important;
    background: linear-gradient(135deg, #0a0f1e 0%, #0d1b3e 50%, #0a0f1e 100%) !important;
    min-height: 100vh;
}

/* ── Header Banner ── */
.cv-header {
    background: linear-gradient(135deg, #0D1B3E 0%, #1A2E5E 60%, #0D1B3E 100%);
    border: 1px solid var(--cv-border);
    border-radius: 16px;
    padding: 28px 36px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}
.cv-header::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 220px; height: 220px;
    background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.cv-header::after {
    content: '';
    position: absolute;
    bottom: -40px; left: 20%;
    width: 140px; height: 140px;
    background: radial-gradient(circle, rgba(26,75,219,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

/* ── Badges ── */
.cv-badge {
    display: inline-block;
    background: rgba(0,212,255,0.12);
    color: var(--cv-accent);
    border: 1px solid rgba(0,212,255,0.3);
    border-radius: 20px;
    padding: 3px 12px;
    font-size: 12px;
    font-weight: 500;
    margin: 2px 4px 2px 0;
    letter-spacing: 0.03em;
}

/* ── Cards ── */
.cv-card {
    background: var(--cv-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--cv-border);
    border-radius: 16px;
    padding: 20px;
    transition: border-color 0.2s;
}
.cv-card:hover { border-color: rgba(0,212,255,0.25); }

/* ── Section labels ── */
.cv-section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--cv-accent);
    margin-bottom: 8px;
}

/* ── Run button ── */
button.primary {
    background: linear-gradient(135deg, var(--cv-blue) 0%, #2563EB 100%) !important;
    border: none !important;
    border-radius: 10px !important;
    font-weight: 600 !important;
    font-size: 15px !important;
    letter-spacing: 0.02em !important;
    box-shadow: 0 4px 20px rgba(26,75,219,0.4) !important;
    transition: transform 0.15s, box-shadow 0.15s !important;
}
button.primary:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 6px 28px rgba(26,75,219,0.55) !important;
}
button.primary:active { transform: translateY(0) !important; }

/* ── Tabs ── */
.tabs .tab-nav { border-bottom: 1px solid var(--cv-border) !important; }
.tabs .tab-nav button {
    font-weight: 500 !important;
    color: rgba(255,255,255,0.55) !important;
    border-radius: 8px 8px 0 0 !important;
}
.tabs .tab-nav button.selected {
    color: var(--cv-accent) !important;
    border-bottom: 2px solid var(--cv-accent) !important;
    background: rgba(0,212,255,0.07) !important;
}

/* ── Inputs ── */
input, textarea, .block { border-radius: 10px !important; }

/* ── Footer ── */
.cv-footer {
    text-align: center;
    padding: 16px 0 6px;
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}
.cv-footer a {
    color: var(--cv-accent);
    text-decoration: none;
    font-weight: 500;
}
.cv-footer a:hover { text-decoration: underline; }

/* ── Status box ── */
.status-box {
    background: rgba(255,255,255,0.04);
    border-radius: 10px;
    border: 1px solid var(--cv-border);
    padding: 10px 14px;
    font-size: 14px;
    min-height: 40px;
}

/* ── How it works strip ── */
.how-it-works {
    display: flex;
    gap: 0;
    margin: 18px 0 8px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--cv-border);
}
.hiw-step {
    flex: 1;
    padding: 14px 12px;
    text-align: center;
    background: rgba(255,255,255,0.03);
    border-right: 1px solid var(--cv-border);
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}
.hiw-step:last-child { border-right: none; }
.hiw-step .hiw-icon  { font-size: 20px; display: block; margin-bottom: 4px; }
.hiw-step .hiw-label {
    font-weight: 600; font-size: 11px; letter-spacing: 0.05em;
    color: var(--cv-accent); display: block; margin-bottom: 2px;
    text-transform: uppercase;
}

/* ── Hide default Gradio footer bar ── */
footer { display: none !important; }
.gradio-container ~ footer { display: none !important; }

/* ── Scrollable Detection JSON box ── */
#result_tabs .code-wrap,
#result_tabs .cm-scroller,
#result_tabs .codemirror-wrapper {
    max-height: 380px !important;
    overflow-y: auto !important;
    scrollbar-width: thin;
    scrollbar-color: rgba(0,212,255,0.4) rgba(255,255,255,0.05);
}
#result_tabs .code-wrap::-webkit-scrollbar { width: 6px; }
#result_tabs .code-wrap::-webkit-scrollbar-track { background: rgba(255,255,255,0.05); border-radius: 3px; }
#result_tabs .code-wrap::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.4); border-radius: 3px; }
#result_tabs .code-wrap::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.65); }
"""