/* ═══════════════════════════════════════════════════════════════
   SterileProtocol Design System v4.0
   Pure Black Theme — kauzey.com/sterileprotocol/ aligned
   ═══════════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
    /* Backgrounds — pure black */
    --bg-deep: #000000;
    --bg-card: #111111;
    --bg-card-solid: #111111;
    --bg-glass: #111111;
    --bg-glass-hover: #1a1a1a;
    --bg-input: #111111;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;

    /* Accent Colors */
    --accent: #10b981;
    --accent-dim: #059669;
    --accent-glow: rgba(16, 185, 129, 0.1);
    --accent-glow-strong: rgba(16, 185, 129, 0.2);
    --indigo: #6366f1;
    --indigo-dim: #4f46e5;
    --indigo-glow: rgba(99, 102, 241, 0.12);
    --indigo-glow-strong: rgba(99, 102, 241, 0.25);

    /* Semantic Colors */
    --correct: #22c55e;
    --incorrect: #ef4444;
    --warning: #f59e0b;

    /* Text */
    --text-primary: #f5f5f7;
    --text-secondary: #cbd5e1;
    --text-muted: #9ca3af;

    /* Borders — subtle dark */
    --border: rgba(34, 34, 34, 1);
    --border-glow: rgba(16, 185, 129, 0.1);
    --border-accent: rgba(16, 185, 129, 0.2);
    --border-indigo: rgba(107, 114, 128, 0.1);

    /* Gradients */
    --gradient-1: linear-gradient(90deg, #10b981 0%, #3b82f6 100%);
    --gradient-2: linear-gradient(135deg, #059669 0%, #10b981 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(16,185,129,0.06) 0%, rgba(107,114,128,0.06) 100%);

    /* Glassmorphism */
    --glass-blur: blur(12px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);

    /* Shadows — subtle */
    --glow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --glow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --glow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --glow-accent: 0 0 15px rgba(16, 185, 129, 0.15);
    --glow-indigo: 0 0 15px rgba(107, 114, 128, 0.1);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Spacing / Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

/* ─── RESET & BASE ─── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html {
    scroll-behavior: smooth;
    /* Fixed nav offset: anchors + scroll-into-view never hide behind header */
    scroll-padding-top: 80px;
}
html, body { scroll-padding-top: 80px; }
body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* ─── GLASS COMPONENTS ─── */
.glass {
    background: rgba(17, 17, 17, 0.72);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    transition: all var(--transition-normal);
}
.glass:hover {
    background: rgba(26, 26, 26, 0.85);
    border-color: rgba(255, 255, 255, 0.12);
}

.glass-panel {
    background: rgba(17, 17, 17, 0.72);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
}

.glass-card {
    background: rgba(17, 17, 17, 0.72);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}
.glass-card:hover {
    background: rgba(26, 26, 26, 0.85);
    border-color: rgba(255, 255, 255, 0.12);
}

/* ─── BUTTONS ─── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: #6366f1;
    color: #ffffff;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}
.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}
.btn-primary:active {
    transform: translateY(0);
    transition: transform 0.1s;
}
.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    background: #64748b;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: #111111;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid #333333;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: #1a1a1a;
}

/* ─── INPUTS ─── */
input, textarea, select {
    font-family: var(--font-sans);
}

/* ─── TYPOGRAPHY UTILITIES ─── */
.text-gradient {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-accent { color: var(--accent); }
.text-indigo { color: var(--indigo); }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: var(--font-mono); }

/* ─── ANIMATIONS ─── */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

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

@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ─── SELECTION ─── */
::selection {
    background: rgba(16, 185, 129, 0.2);
    color: var(--text-primary);
}

/* ─── FOCUS STATES (A11y) ─── */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ─── SPINNER ─── */
.spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 2px solid rgba(255, 255, 255, 0.08);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ─── PROTOCOL DETAIL MODAL ─── */
.reproc-chain {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.reproc-step {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(45, 55, 72, 0.2);
    border-radius: 14px;
    padding: 16px 20px;
}

.reproc-step-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.reproc-step-icon {
    font-size: 1.2rem;
}

.reproc-step-title {
    font-size: 0.82rem;
    font-weight: 700;
    font-family: var(--font-sans);
    letter-spacing: 0.5px;
}

.reproc-params {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.reproc-param {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.reproc-param-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: var(--font-sans);
}

.reproc-param-value {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.reproc-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    font-family: var(--font-sans);
}

/* ─── HIDDEN UTILITY ─── */
.hidden { display: none !important; }

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}