/* ============================================================
   PR Analyzer — Sistema de diseño
   Monocromo cálido + pasteles apagados. Ultra-flat, editorial.
   ============================================================ */

:root {
    --canvas: #FBFBFA;
    --surface: #FFFFFF;
    --surface-2: #F7F6F3;
    --track: #F1F0EE;
    --border: #EAEAEA;
    --ink: #111111;
    --ink-hover: #333333;
    --text: #2F3437;
    --muted: #787774;
    --faint: #A8A6A0;

    --pale-red-bg: #FDEBEC;    --pale-red-fg: #9F2F2D;
    --pale-blue-bg: #E1F3FE;   --pale-blue-fg: #1F6C9F;
    --pale-green-bg: #EDF3EC;  --pale-green-fg: #346538;
    --pale-yellow-bg: #FBF3DB; --pale-yellow-fg: #956400;
    --pale-orange-bg: #FAEBDD; --pale-orange-fg: #8A4B21;

    --font-sans: 'Geist', 'Helvetica Neue', ui-sans-serif, system-ui, sans-serif;
    --font-serif: 'Newsreader', Georgia, serif;
    --font-mono: 'Geist Mono', 'SF Mono', ui-monospace, monospace;

    --ease-out-soft: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    font-family: var(--font-sans);
}
code, pre, kbd, .mono {
    font-family: var(--font-mono);
}

body {
    background: var(--canvas);
    color: var(--text);
    line-height: 1.6;
}

/* Luz ambiental cálida, fija, casi imperceptible */
.ambient-light {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(600px 400px at 85% -5%, rgba(190, 160, 105, 0.06), transparent 70%),
        radial-gradient(700px 500px at -10% 100%, rgba(120, 119, 116, 0.05), transparent 70%);
}

/* ============ Tipografía ============ */

.display-serif {
    font-family: var(--font-serif);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--ink);
    text-wrap: balance;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.tabular {
    font-variant-numeric: tabular-nums;
}

/* ============ Navegación superior ============ */

.site-nav {
    position: relative;
    z-index: 10;
    background: rgba(251, 251, 250, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}
.nav-link:hover {
    color: var(--ink);
    background: var(--track);
}
.nav-link.current {
    color: var(--ink);
}

/* ============ Tabs ============ */

.tab-btn {
    position: relative;
    padding: 0.75rem 0.25rem;
    margin-right: 1.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s;
}
.tab-btn:hover {
    color: var(--ink);
}
.tab-btn::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 2px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out-soft);
}
.tab-btn.active {
    color: var(--ink);
}
.tab-btn.active::after {
    transform: scaleX(1);
}

/* ============ Tarjetas ============ */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card-hover:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* Entrada suave cada vez que un bloque deja de estar oculto */
.reveal {
    animation: fade-up 0.6s var(--ease-out-soft);
}
@keyframes fade-up {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============ Botones ============ */

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--ink);
    color: #FFFFFF;
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover { background: var(--ink-hover); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--surface);
    color: var(--text);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.btn-secondary:hover { background: var(--surface-2); border-color: #DDDCDA; }
.btn-secondary:active { transform: scale(0.98); }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-mini {
    background: var(--ink);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, transform 0.15s;
}
.btn-mini:hover { background: var(--ink-hover); }
.btn-mini:active { transform: scale(0.98); }

.btn-mini-ghost {
    background: var(--surface);
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: 5px;
    border: 1px solid var(--border);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s, transform 0.15s;
}
.btn-mini-ghost:hover { background: var(--surface-2); color: var(--ink); }
.btn-mini-ghost:active { transform: scale(0.98); }

/* ============ Formularios ============ */

.input-field {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.input-field::placeholder { color: var(--faint); }
.input-field:focus {
    background: var(--surface);
    border-color: var(--ink);
    box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.06);
}

.field-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 0.5rem;
}

/* ============ Mensajes de estado ============ */

.alert-error {
    background: var(--pale-red-bg);
    color: var(--pale-red-fg);
    border: 1px solid rgba(159, 47, 45, 0.12);
    border-radius: 8px;
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
}
.notice-warn {
    background: var(--pale-yellow-bg);
    color: var(--pale-yellow-fg);
    border: 1px solid rgba(149, 100, 0, 0.12);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.8125rem;
}

/* ============ Prosa (resultado del análisis) ============ */

.prose-custom h1, .prose-custom h2, .prose-custom h3,
.prose-custom h4, .prose-custom h5, .prose-custom h6 {
    font-family: var(--font-serif);
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    text-wrap: balance;
}
.prose-custom h1 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.75rem;
}
.prose-custom h2 { font-size: 1.375rem; }
.prose-custom h3 { font-size: 1.125rem; }
.prose-custom p {
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 1rem;
    max-width: 72ch;
}
.prose-custom ul, .prose-custom ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}
.prose-custom ul { list-style: disc; }
.prose-custom ol { list-style: decimal; }
.prose-custom li {
    color: var(--text);
    margin-bottom: 0.375rem;
    line-height: 1.7;
}
.prose-custom strong { font-weight: 600; color: var(--ink); }
.prose-custom em { font-style: italic; color: var(--muted); }
.prose-custom code {
    background: var(--surface-2);
    color: var(--pale-red-fg);
    border: 1px solid var(--border);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.85em;
}
.prose-custom pre {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1rem;
    word-wrap: break-word;
    white-space: pre-wrap;
    word-break: break-word;
}
.prose-custom pre code {
    background: transparent;
    border: none;
    color: var(--text);
    padding: 0;
}
.prose-custom blockquote {
    border-left: 2px solid var(--ink);
    padding-left: 1rem;
    color: var(--muted);
    font-family: var(--font-serif);
    font-style: italic;
    margin-bottom: 1rem;
}

/* ============ Score gauge ============ */

.score-gauge {
    position: relative;
    width: 140px;
    height: 140px;
}
.score-gauge svg {
    transform: rotate(-90deg);
}
.score-gauge-bg {
    fill: none;
    stroke: var(--track);
    stroke-width: 8;
}
.score-gauge-fill {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s var(--ease-out-soft), stroke 0.5s ease;
}
.score-gauge-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

/* ============ Barras de categoría ============ */

.score-bar {
    height: 6px;
    border-radius: 3px;
    background: var(--track);
    overflow: hidden;
}
.score-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--ink);
    transition: width 1s var(--ease-out-soft);
}

/* ============ Badges de riesgo ============ */

.risk-badge {
    display: inline-block;
    padding: 0.25rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.risk-low      { background: var(--pale-green-bg);  color: var(--pale-green-fg); }
.risk-medium   { background: var(--pale-yellow-bg); color: var(--pale-yellow-fg); }
.risk-high     { background: var(--pale-orange-bg); color: var(--pale-orange-fg); }
.risk-critical { background: var(--pale-red-bg);    color: var(--pale-red-fg); }

/* Puntos de severidad */
.sev-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 9999px;
    flex-shrink: 0;
}
.sev-dot-critical   { background: var(--pale-red-fg); }
.sev-dot-major      { background: var(--pale-orange-fg); }
.sev-dot-minor      { background: var(--pale-yellow-fg); }
.sev-dot-suggestion { background: var(--pale-green-fg); }

/* ============ Lista de issues ============ */

.issue-item {
    padding: 0.625rem 0.75rem;
    border-radius: 6px;
    margin-bottom: 0.375rem;
    border: 1px solid var(--border);
    border-left-width: 2px;
    background: var(--surface);
}
.issue-critical   { border-left-color: var(--pale-red-fg);    background: var(--pale-red-bg); }
.issue-major      { border-left-color: var(--pale-orange-fg); background: var(--pale-orange-bg); }
.issue-minor      { border-left-color: var(--pale-yellow-fg); background: var(--pale-yellow-bg); }
.issue-suggestion { border-left-color: var(--pale-green-fg);  background: var(--pale-green-bg); }

/* ============ Lista de PRs ============ */

.pr-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    transition: box-shadow 0.2s ease;
}
.pr-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.pr-title-link {
    display: block;
    font-weight: 500;
    font-size: 1rem;
    color: var(--ink);
    margin-bottom: 0.375rem;
    text-decoration: none;
}
.pr-title-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.state-badge {
    display: inline-block;
    padding: 0.1875rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}
.state-open   { background: var(--pale-green-bg); color: var(--pale-green-fg); }
.state-merged { background: var(--pale-blue-bg);  color: var(--pale-blue-fg); }
.state-closed { background: var(--track);         color: var(--muted); }

/* ============ Chat ============ */

.chat-container {
    display: flex;
    flex-direction: column;
    height: 500px;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--canvas);
    scroll-behavior: smooth;
}
.chat-message {
    margin-bottom: 1rem;
    animation: slideIn 0.3s var(--ease-out-soft);
}
@keyframes slideIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
.chat-message.user { text-align: right; }
.chat-message.assistant { text-align: left; }
.chat-bubble {
    display: inline-block;
    max-width: 80%;
    padding: 0.625rem 0.875rem;
    border-radius: 10px;
    word-wrap: break-word;
    white-space: pre-wrap;
    font-size: 0.875rem;
    text-align: left;
}
.chat-bubble.user {
    background: var(--ink);
    color: #FFFFFF;
    border-bottom-right-radius: 3px;
}
.chat-bubble.assistant {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-bottom-left-radius: 3px;
}
.chat-input-container {
    display: flex;
    gap: 0.5rem;
    padding: 0.875rem;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

/* ============ Botón flotante de Garen ============ */

.garen-float-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--ink);
    color: #FFFFFF;
    box-shadow: 0 2px 12px rgba(17, 17, 17, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s var(--ease-out-soft);
    z-index: 1000;
    border: none;
}
.garen-float-btn:hover {
    background: var(--ink-hover);
    transform: translateY(-2px);
}
.garen-float-btn:active {
    transform: scale(0.96);
}
.garen-float-btn.active {
    background: var(--ink-hover);
}
.garen-float-btn.has-notification::after {
    content: '';
    position: absolute;
    top: -3px;
    right: -3px;
    width: 10px;
    height: 10px;
    border-radius: 9999px;
    background: var(--pale-red-fg);
    border: 2px solid var(--canvas);
}

/* ============ Panel de chat ============ */

.chat-overlay {
    position: fixed;
    bottom: 100px;
    right: 2rem;
    width: 400px;
    max-width: calc(100vw - 4rem);
    max-height: 600px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(17, 17, 17, 0.10);
    z-index: 999;
    opacity: 0;
    transform: translateY(12px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.3s var(--ease-out-soft), transform 0.3s var(--ease-out-soft);
    overflow: hidden;
}
.chat-overlay.show {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}
.chat-overlay-header {
    background: var(--surface);
    color: var(--ink);
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.chat-overlay-close {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--muted);
    width: 28px;
    height: 28px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}
.chat-overlay-close:hover {
    background: var(--track);
    color: var(--ink);
}
.chat-overlay-body {
    height: calc(600px - 58px);
    display: flex;
    flex-direction: column;
}

@keyframes typing {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50%      { opacity: 1;   transform: translateY(-4px); }
}

/* ============ Comparación de PR ============ */

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.comparison-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}
.comparison-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    min-width: 90px;
}
.comparison-stat-green  { background: var(--pale-green-bg);  border-color: rgba(52, 101, 56, 0.12); }
.comparison-stat-yellow { background: var(--pale-yellow-bg); border-color: rgba(149, 100, 0, 0.12); }
.comparison-stat-red    { background: var(--pale-red-bg);    border-color: rgba(159, 47, 45, 0.12); }
.comparison-stat-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}
.comparison-stat-value {
    font-family: var(--font-mono);
    font-size: 1.375rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.comparison-section { margin-bottom: 0.875rem; }
.comparison-section-title {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}
.comparison-issue-row {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.4rem 0.625rem;
    border-radius: 6px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    margin-bottom: 0.25rem;
    font-size: 0.8125rem;
}
.comparison-sev {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    white-space: nowrap;
    color: var(--muted);
    min-width: 96px;
}
.comparison-desc { color: var(--text); }