/* =========================================
   TOKENS DE DISEÑO - Calculadora de UDIS v2
   Frosted Glass Premium Design System
   ========================================= */
:root {
    --bg-base:       #070d1a;
    --bg-mid:        #0d1630;
    --glass-bg:      rgba(255, 255, 255, 0.05);
    --glass-border:  rgba(255, 255, 255, 0.12);
    --glass-hover:   rgba(255, 255, 255, 0.08);
    --blur:          blur(24px);

    --text-100: #f0f4ff;
    --text-200: #a8b8d8;
    --text-300: #6278a0;

    --accent-blue:   #3b82f6;
    --accent-teal:   #10b981;
    --accent-amber:  #f59e0b;
    --accent-purple: #8b5cf6;

    --shadow-card:   0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow:   0 0 30px rgba(59, 130, 246, 0.15);

    --radius-xl:  24px;
    --radius-lg:  16px;
    --radius-md:  10px;
    --radius-sm:  6px;

    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ============== RESET & BASE ============== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background-color: var(--bg-base);
    color: var(--text-100);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============== FONDO ANIMADO ============== */
.bg-gradient {
    position: fixed; inset: 0; z-index: -2;
    background: radial-gradient(ellipse at 20% 20%, #0d1f4a 0%, var(--bg-base) 60%),
                radial-gradient(ellipse at 80% 80%, #071225 0%, transparent 60%);
}

.blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.35;
    z-index: -1;
    animation: floatBlob 14s ease-in-out infinite alternate;
    pointer-events: none;
}

.blob-blue {
    width: 500px; height: 500px;
    background: radial-gradient(circle, #1d4ed8, transparent);
    top: -15%; left: -10%;
}

.blob-teal {
    width: 350px; height: 350px;
    background: radial-gradient(circle, #065f46, transparent);
    bottom: 10%; right: 5%;
    animation-delay: -6s;
}

.blob-purple {
    width: 280px; height: 280px;
    background: radial-gradient(circle, #4c1d95, transparent);
    top: 50%; left: 60%;
    animation-delay: -3s;
}

@keyframes floatBlob {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(25px, 40px) scale(1.08); }
}

/* ============== LAYOUT ============== */
.app-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ============== HEADER ============== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    display: grid; place-items: center;
    font-size: 1.4rem;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}

.app-header h1 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-100);
    letter-spacing: -0.5px;
}

.app-header p {
    font-size: 0.8rem;
    color: var(--text-300);
    margin-top: 2px;
}

/* Badge de estado */
.badge {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--blur);
    transition: all 0.4s ease;
}

.badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
}

.badge-loading .badge-dot { background: var(--accent-amber); animation: pulse 1.2s infinite; }
.badge-live    .badge-dot { background: var(--accent-teal); }
.badge-offline .badge-dot { background: var(--text-300); }
.badge-loading { color: var(--accent-amber); background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.2); }
.badge-live    { color: var(--accent-teal);  background: rgba(16, 185, 129, 0.08); border-color: rgba(16, 185, 129, 0.2); }
.badge-offline { color: var(--text-200);     background: rgba(255,255,255,0.04);  }

@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.3;} }

/* ============== KPI GRID ============== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.kpi-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    padding: 1.4rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: transform 0.2s ease, background 0.2s ease;
}

.kpi-card:hover {
    background: var(--glass-hover);
    transform: translateY(-2px);
}

.kpi-icon {
    width: 40px; height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    display: grid; place-items: center;
    flex-shrink: 0;
    color: var(--icon-color, #fff);
}

.kpi-icon svg { width: 18px; height: 18px; }

.kpi-content {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.kpi-label {
    font-size: 0.75rem;
    color: var(--text-300);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.kpi-value {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--text-100);
    letter-spacing: -0.5px;
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kpi-sub {
    font-size: 0.72rem;
    color: var(--text-300);
}

/* ============== GLASS PANEL (Base para secciones) ============== */
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    padding: 2rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--glass-border);
}

.panel-icon {
    width: 20px; height: 20px;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.panel-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-100);
}

.panel-header p {
    font-size: 0.8rem;
    color: var(--text-300);
    margin-top: 2px;
}

/* ============== CONVERSIÓN ============== */
.converter-row {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
}

.input-block {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-block label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-200);
}

.input-field {
    display: flex;
    align-items: center;
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-field:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.field-prefix, .field-suffix {
    padding: 0 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-300);
    white-space: nowrap;
    background: rgba(255,255,255,0.03);
    height: 100%;
    display: flex;
    align-items: center;
    border-right: 1px solid var(--glass-border);
}

.field-suffix {
    border-right: none;
    border-left: 1px solid var(--glass-border);
}

input[type="number"] {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.85rem 1rem;
    color: var(--text-100);
    font-size: 1.25rem;
    font-weight: 600;
    font-family: var(--font);
    outline: none;
    width: 100%;
    -moz-appearance: textfield;
    min-width: 0;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

.swap-btn {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    cursor: pointer;
    display: grid; place-items: center;
    flex-shrink: 0;
    transition: all 0.2s ease;
    margin-bottom: 2px;
}

.swap-btn svg { width: 18px; height: 18px; }

.swap-btn:hover {
    background: rgba(59, 130, 246, 0.3);
    transform: rotate(180deg);
}

/* ============== CONFIGURACIÓN PROYECCIÓN ============== */
.config-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.config-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.config-field label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-200);
}

.config-field select,
.config-field input[type="number"] {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 0.65rem 0.9rem;
    color: var(--text-100);
    font-size: 0.9rem;
    font-family: var(--font);
    font-weight: 500;
    outline: none;
    width: 100%;
    transition: border-color 0.2s, box-shadow 0.2s;
    -moz-appearance: textfield;
}

.config-field select:focus,
.config-field input[type="number"]:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.config-field select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236278a0' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 2.5rem;
}

/* ============== TABLA DE PROYECCIÓN ============== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.projection-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    min-width: 720px;
}

.projection-table thead tr {
    background: rgba(255,255,255,0.05);
    border-bottom: 1px solid var(--glass-border);
}

.projection-table th {
    padding: 12px 14px;
    text-align: right;
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-300);
    white-space: nowrap;
}

.projection-table th:first-child { text-align: left; }

.projection-table th.highlight-col {
    color: var(--accent-teal);
}

.projection-table tbody tr {
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: background 0.15s;
}

.projection-table tbody tr:hover {
    background: rgba(255,255,255,0.04);
}

.projection-table tbody tr:nth-child(even) {
    background: rgba(255,255,255,0.02);
}

.projection-table tbody tr:nth-child(even):hover {
    background: rgba(255,255,255,0.05);
}

.projection-table td {
    padding: 11px 14px;
    text-align: right;
    color: var(--text-200);
    white-space: nowrap;
}

.projection-table td:first-child {
    text-align: left;
    font-weight: 700;
    color: var(--text-100);
}

.projection-table td.vf-col {
    font-weight: 700;
    color: var(--accent-teal);
}

.projection-table td.vp-col {
    color: var(--accent-blue);
}

/* Loading state de la tabla */
.table-loading {
    text-align: center !important;
    padding: 2rem !important;
    color: var(--text-300);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.mini-spinner {
    width: 16px; height: 16px;
    border: 2px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

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

/* ============== FOOTER ============== */
.app-footer {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-300);
    padding: 0 1rem;
}

.app-footer a {
    color: var(--accent-blue);
    text-decoration: none;
}

.app-footer a:hover { text-decoration: underline; }

/* ============== TOAST ============== */
.toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: rgba(30, 10, 10, 0.9);
    border: 1px solid rgba(239, 68, 68, 0.3);
    backdrop-filter: blur(12px);
    color: #fca5a5;
    padding: 0.75rem 1.25rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 999;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
}

.toast svg { width: 16px; height: 16px; flex-shrink: 0; }

.toast.show { transform: translateX(-50%) translateY(0); }
.hidden { display: none !important; }

/* ============== RESPONSIVE ============== */
@media (max-width: 900px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .config-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .app-wrapper { padding: 1rem 1rem 3rem; }
    .app-header { flex-direction: column; gap: 1rem; align-items: flex-start; }
    .kpi-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .kpi-value { font-size: 1.2rem; }
    .glass-panel { padding: 1.25rem; }
    .converter-row { flex-direction: column; }
    .swap-btn { transform: rotate(90deg); align-self: center; }
    .swap-btn:hover { transform: rotate(270deg); }
    .config-grid { grid-template-columns: 1fr 1fr; }
}