/* ============================================================
   HIIT Timer — Estilos globales
   Dark theme minimalista con verde como color de acento.
   La paleta se centraliza en custom properties para reusarla
   en todos los componentes de las siguientes iteraciones.
   ============================================================ */

:root {
    /* Fondos */
    --bg: #0e0f13;
    --surface: #171922;
    --surface-raised: #1f222d;
    --border: #2a2e3a;

    /* Texto */
    --text: #e8eaed;
    --text-muted: #9aa1ad;

    /* Acento verde (color de contraste) */
    --accent: #22c55e;
    --accent-strong: #16a34a;
    --accent-soft: rgba(34, 197, 94, 0.12);

    /* Semánticos */
    --danger: #ef4444;
    --warning: #f59e0b;

    /* Forma y movimiento */
    --radius: 14px;
    --radius-sm: 9px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --transition: 160ms ease;

    color-scheme: dark;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, system-ui, sans-serif;
    background: radial-gradient(1200px 600px at 50% -10%, #16181f 0%, var(--bg) 60%);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 0;
    overflow-wrap: break-word;
    max-width: 100%;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-strong);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- Botones base (reutilizables) ---------- */

.btn {
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.25rem;
    transition: background var(--transition), border-color var(--transition),
                transform var(--transition), color var(--transition);
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    color: #06250f;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text);
    border-color: var(--accent);
}

/* ---------- Loader de arranque (Blazor) ---------- */

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 38vh 0 auto 0;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke: var(--border);
    stroke-width: 0.5rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--accent);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: 600;
    color: var(--text-muted);
    inset: calc(38vh + 3.25rem) 0 auto 0;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Cargando");
}

/* ---------- Error UI ---------- */

#blazor-error-ui {
    color-scheme: dark only;
    background: var(--surface-raised);
    color: var(--text);
    border-top: 1px solid var(--danger);
    bottom: 0;
    box-shadow: 0 -1px 12px rgba(0, 0, 0, 0.4);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: var(--danger);
    padding: 1rem;
    color: white;
    border-radius: var(--radius-sm);
}

.blazor-error-boundary::after {
    content: "Ha ocurrido un error.";
}