/* ═══════════════════════════════════════════════════════════════
   TR ESTANQUE AP — GLOBAL THEME  v4.0  (AutoCAD Dark)
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-dark:        #1a1d21;
    --bg-panel:       #21262d;
    --bg-card:        #252b33;
    --bg-card-hover:  #2d333d;
    --bg-input:       #161b22;
    --bg-result:      #0d1117;

    --cad-blue:       #00aaff;
    --cad-blue-dim:   #0066cc;
    --cad-cyan:       #00e5ff;
    --cad-green:      #00ff88;
    --cad-green-dim:  #00b359;
    --cad-orange:     #ff8c00;
    --cad-red:        #ff3b3b;
    --cad-yellow:     #ffd700;
    --cad-purple:     #c084fc;

    --text-primary:   #e6edf3;
    --text-secondary: #8b949e;
    --text-muted:     #484f58;

    --border-base:    #30363d;
    --border-accent:  var(--cad-blue);

    --shadow-card:    0 4px 24px rgba(0,0,0,0.5);
    --shadow-hover:   0 8px 32px rgba(0,170,255,0.2);
    --grid-color:     rgba(0,170,255,0.04);

    /* Legacy */
    --primary-color:   #00aaff;
    --secondary-color: #0066cc;
    --success-color:   #00ff88;
    --warning-color:   #ffd700;
    --danger-color:    #ff3b3b;
    --card-bg:         var(--bg-card);
    --text-color:      var(--text-primary);
    --border-color:    var(--border-base);
    --shadow:          var(--shadow-card);
    --shadow-hover:    0 8px 32px rgba(0,170,255,0.2);
}

/* ── BASE ───────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0;
}

/* ── SCROLLBAR ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--cad-blue-dim); }

/* ── CONTAINER ──────────────────────────────────────────────── */
.container {
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 1.25rem 2rem;
}

/* ── HEADER ─────────────────────────────────────────────────── */
header {
    background: linear-gradient(135deg, #0d1117 0%, #161b22 60%, #1a2332 100%);
    border-bottom: 1px solid var(--border-base);
    color: var(--text-primary);
    padding: 0 1.5rem;
    height: 54px;
    display: flex;
    align-items: center;
    gap: 0;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.25rem;
    text-align: left;
}

header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cad-blue), var(--cad-cyan), var(--cad-blue), transparent);
}

/* ── TR LOGO ────────────────────────────────────────────────── */
.tr-logo {
    display: inline-flex;
    align-items: center;
    gap: 0;
    text-decoration: none;
    margin-right: 14px;
    flex-shrink: 0;
}
.tr-logo-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px; height: 26px;
    background: #cc2222;
    border-radius: 3px;
    color: #fff;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: -0.5px;
    font-family: 'Inter', sans-serif;
    margin-right: 6px;
    box-shadow: 0 0 10px rgba(204,34,34,0.5);
}
.tr-logo-text {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.8px;
    color: #cccccc;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}
.header-sep {
    width: 1px; height: 32px;
    background: var(--border-base);
    margin: 0 16px;
    flex-shrink: 0;
}
.header-title-block {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    flex: 1;
}
.header-title-block h1 {
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(0,170,255,0.35);
    margin: 0;
}
.header-title-block p {
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin: 0;
}

/* CodeLab corner (now inline right side) */
.codelab-logo-corner {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.2s;
    position: static;
    margin-left: auto;
    flex-shrink: 0;
}
.codelab-logo-corner:hover { opacity: 1; }
.codelab-logo-corner svg {
    width: 28px; height: 28px;
    border-radius: 6px;
}
.codelab-logo-corner span {
    font-size: 0.9rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.02em;
    font-family: 'Inter', sans-serif;
}
.codelab-logo-corner span strong {
    color: var(--cad-blue);
    font-weight: 800;
}

/* Legacy h1 subtitle inside header */
header > h1 { display: none; }
header > .subtitle { display: none; }

/* ── MAIN CONTENT GRID ──────────────────────────────────────── */
.main-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 1.25rem;
    align-items: start;
}

.panel-izquierdo,
.panel-derecho {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

/* ── CARDS ──────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: 10px;
    padding: 1.25rem 1.4rem;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.3s ease;
}
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--cad-blue), var(--cad-cyan));
    opacity: 0.6;
}
.card:hover {
    border-color: rgba(0,170,255,0.3);
    box-shadow: var(--shadow-hover);
}

.card h2 {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--cad-blue);
    margin-bottom: 1rem;
    padding-bottom: 0.55rem;
    border-bottom: 1px solid var(--border-base);
}

/* ── CANVAS 3D ──────────────────────────────────────────────── */
#canvas3d {
    width: 100%;
    height: 480px;
    background: linear-gradient(to bottom, #080f1a 0%, #0a1628 100%);
    border-radius: 8px;
    border: 1px solid var(--border-base);
    position: relative;
    overflow: hidden;
}

#canvasCorteAA,
#canvasCorteBB,
#canvasPlanta {
    width: 100%;
    height: 480px;
    background: #0a0e14;
    border-radius: 8px;
    border: 1px solid var(--border-base);
}

/* Planos con estilo de lámina técnica: fondo blanco */
#canvasPlanta,
#canvasCorteAA,
#canvasCorteBB { background: #fff; height: 560px; }
/* Lámina A3 horizontal: alto proporcional al ancho */
#canvasLamina {
    width: 100%;
    aspect-ratio: 1680 / 1188;
    background: #fff;
    border-radius: 8px;
    border: 1px solid var(--border-base);
}

/* ── 3D CONTROLS ────────────────────────────────────────────── */
.controles-3d {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.85rem;
    justify-content: center;
    flex-wrap: wrap;
}
.controles-3d button {
    padding: 0.45rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-base);
    color: var(--text-secondary);
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
}
.controles-3d button:hover {
    border-color: var(--cad-blue);
    color: var(--cad-blue);
    background: rgba(0,170,255,0.08);
}
/* Botón destacado "Exportar Reporte PDF" junto a las descargas */
.controles-3d .btn-pdf {
    background: linear-gradient(135deg, #ff8a1f, #e8381e);
    border: 1px solid #ff9b45;
    color: #fff;
    padding: 0.5rem 1.3rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    box-shadow: 0 4px 14px rgba(232,56,30,0.45);
    animation: pulsoPdf 2.4s ease-in-out infinite;
}
.controles-3d .btn-pdf:hover {
    background: linear-gradient(135deg, #ff9b3d, #f04a2e);
    border-color: #ffb36b;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(232,56,30,0.6);
}
.controles-3d .btn-pdf:active { transform: scale(0.97); }
@keyframes pulsoPdf {
    0%, 100% { box-shadow: 0 4px 14px rgba(232,56,30,0.45); }
    50%      { box-shadow: 0 4px 22px rgba(255,138,31,0.75); }
}

/* ── TABS ───────────────────────────────────────────────────── */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-base);
    flex-wrap: wrap;
}
.tab-btn {
    padding: 0.5rem 0.9rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
    margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--cad-blue);
    border-bottom-color: var(--cad-blue);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── RESULTADOS ─────────────────────────────────────────────── */
.resultados {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.resultado-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0.9rem;
    background: var(--bg-result);
    border: 1px solid var(--border-base);
    border-left: 3px solid var(--cad-blue);
    border-radius: 6px;
    transition: border-color 0.2s;
}
.resultado-item:hover { border-left-color: var(--cad-cyan); }
.resultado-item .label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.resultado-item .value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--cad-green);
    text-shadow: 0 0 10px rgba(0,255,136,0.3);
}
.resultado-item .value.success { color: var(--cad-green); text-shadow: 0 0 10px rgba(0,255,136,0.3); }
.resultado-item .value.warning { color: var(--cad-yellow); text-shadow: 0 0 10px rgba(255,215,0,0.3); }
.resultado-item .value.danger  { color: var(--cad-red);    text-shadow: 0 0 10px rgba(255,59,59,0.3); }

/* ── MAIN BUTTONS ───────────────────────────────────────────── */
.btn-calcular,
.btn-exportar {
    width: 100%;
    padding: 0.85rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}
.btn-calcular {
    background: linear-gradient(135deg, var(--cad-green-dim), var(--cad-green));
    color: #0d1117;
    box-shadow: 0 4px 16px rgba(0,179,89,0.4);
}
.btn-calcular:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(0,255,136,0.4);
}
.btn-exportar {
    background: linear-gradient(135deg, var(--cad-blue-dim), var(--cad-blue));
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,102,204,0.4);
}
.btn-exportar:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(0,170,255,0.4);
}
.btn-calcular:active,
.btn-exportar:active { transform: scale(0.98) translateY(0); }

/* Asistente button */
.btn-asistente {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.4rem 1.1rem;
    background: rgba(0,170,255,0.12);
    border: 1px solid rgba(0,170,255,0.3);
    color: var(--cad-blue);
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: all 0.2s;
    margin-left: 1rem;
    flex-shrink: 0;
}
.btn-asistente:hover {
    background: rgba(0,170,255,0.2);
    box-shadow: 0 0 16px rgba(0,170,255,0.3);
}

/* ── RECOMENDACIONES ────────────────────────────────────────── */
.recomendaciones-lista {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.recomendacion-item {
    padding: 0.65rem 0.9rem;
    background: rgba(0,170,255,0.05);
    border-left: 3px solid var(--cad-blue);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.recomendacion-item.warning {
    background: rgba(255,215,0,0.05);
    border-left-color: var(--cad-yellow);
    color: var(--cad-yellow);
}
.recomendacion-item.success {
    background: rgba(0,255,136,0.05);
    border-left-color: var(--cad-green);
    color: var(--cad-green);
}

.info-text {
    color: var(--text-muted);
    text-align: center;
    padding: 1.25rem;
    font-size: 0.8rem;
}

/* ── ANIMATION ──────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .main-content { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .container { padding: 0 0.75rem 1.5rem; }
    header { height: auto; padding: 0.85rem 1rem; flex-wrap: wrap; gap: 0.5rem; }
    .tr-logo-text { font-size: 11px; }
}