/* ============================================================
   Midxela Paste — Sistema de diseño unificado
   assets/css/theme.css
   Fuente única de verdad: tokens + primitivas compartidas.
   Cargar SIEMPRE antes de la hoja específica de cada página.
   ============================================================ */

:root {
    /* --- Superficies (escala oscura, azul-neutro) --- */
    --bg-body:      #080b12;
    --bg-surface:   #0f141f;
    --bg-elevated:  #151c2b;
    --bg-input:     #0b111c;
    --bg-overlay:   rgba(8, 11, 18, 0.78);

    /* --- Texto --- */
    --text-primary:   #eef2f8;
    --text-secondary: #9aa8bd;
    --text-muted:     #64748b;

    /* --- Acento de marca: verde menta con tendencia celeste --- */
    --accent:         #2DE1A8;
    --accent-hover:   #55ECBD;
    --accent-active:  #17C48E;
    --accent-soft:    rgba(45, 225, 168, 0.12);
    --accent-border:  rgba(45, 225, 168, 0.32);
    --accent-glow:    rgba(45, 225, 168, 0.28);
    --accent-contrast:#04231a; /* texto sobre fondo acento */

    /* Secundario de apoyo, celeste puro (gradientes y detalles) */
    --accent-2:       #38BDF8;
    --accent-gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);

    /* --- Estados --- */
    --danger:        #f4636b;
    --danger-hover:  #e04651;
    --danger-soft:   rgba(244, 99, 107, 0.12);
    --warning:       #fbbf24;
    --success:       #2DE1A8;

    /* --- Bordes y elevación --- */
    --border:        #1e2735;
    --border-strong: #2b3648;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow-md: 0 8px 24px -8px rgba(0,0,0,.6);
    --shadow-lg: 0 24px 48px -12px rgba(0,0,0,.7);
    --shadow-accent: 0 8px 28px -8px var(--accent-glow);

    /* --- Radios --- */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 18px;
    --r-full: 999px;

    /* --- Espaciado --- */
    --sp-1: .25rem;  --sp-2: .5rem;   --sp-3: .75rem;
    --sp-4: 1rem;    --sp-5: 1.5rem;  --sp-6: 2rem;
    --sp-7: 3rem;    --sp-8: 4rem;    --sp-9: 6rem;

    /* --- Tipografía --- */
    --font-heading: 'Space Grotesk', 'Montserrat', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, -apple-system, sans-serif;
    --font-code:    'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

    /* --- Movimiento --- */
    --t-fast: 140ms cubic-bezier(.4,0,.2,1);
    --t-base: 220ms cubic-bezier(.4,0,.2,1);

    --nav-h: 68px;
    --container: 1180px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -.02em;
    color: var(--text-primary);
}

a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }

::selection { background: var(--accent); color: var(--accent-contrast); }

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

/* --- Scrollbar --- */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--r-full);
    border: 2px solid var(--bg-body);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   Layout
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--sp-5);
}

/* ============================================================
   Marca
   ============================================================ */
.brand-link, .brand-link-center, .brand-logo-link, .logo-link {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-3);
    transition: opacity var(--t-fast);
}
.brand-link:hover, .brand-link-center:hover, .brand-logo-link:hover { opacity: .85; }

.brand-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -.01em;
    color: var(--text-primary);
    white-space: nowrap;
}
.brand-name span { color: var(--accent); }

.nav-logo, .sidebar-logo, .brand-logo, .footer-logo, .logo {
    width: 34px; height: 34px;
    object-fit: contain;
}

/* ============================================================
   Botones
   ============================================================ */
.btn,
.btn-submit,
.primary-btn,
.secondary-btn,
.action-btn,
.cta-button,
.danger-btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: .625rem 1.15rem;
    border-radius: var(--r-md);
    border: 1px solid transparent;
    font-family: var(--font-body);
    font-size: .9rem;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    cursor: pointer;
    transition: background var(--t-fast), border-color var(--t-fast),
                color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.btn:active, .primary-btn:active, .secondary-btn:active,
.btn-submit:active, .action-btn:active, .cta-button:active { transform: translateY(1px); }

button:disabled, .btn:disabled, .primary-btn:disabled,
.secondary-btn:disabled, .btn-submit:disabled, .action-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
    transform: none !important;
}

/* Primario — sólido acento */
.btn-primary, .primary-btn, .btn-register, .action-btn,
.btn-submit, .cta-button.register-btn {
    background: var(--accent);
    color: var(--accent-contrast);
    border-color: var(--accent);
}
.btn-primary:hover, .primary-btn:hover, .btn-register:hover, .action-btn:hover,
.btn-submit:hover, .cta-button.register-btn:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: var(--shadow-accent);
}

/* Secundario — contorno */
.btn-secondary, .secondary-btn, .btn-login, .cta-button.login-btn {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-strong);
}
.btn-secondary:hover, .secondary-btn:hover, .btn-login:hover, .cta-button.login-btn:hover {
    border-color: var(--accent-border);
    background: var(--accent-soft);
    color: var(--accent);
}

/* Peligro — contorno */
.danger-btn-outline, .cancel-btn {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger-soft);
}
.danger-btn-outline:hover {
    background: var(--danger-soft);
    border-color: var(--danger);
}
.cancel-btn {
    color: var(--text-secondary);
    border-color: var(--border-strong);
}
.cancel-btn:hover { background: var(--bg-elevated); color: var(--text-primary); }

.btn-lg { padding: .875rem 1.75rem; font-size: 1rem; border-radius: var(--r-md); }

/* Botón icono */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    flex: 0 0 auto;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    transition: var(--t-fast);
}
.icon-btn:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-soft);
}
.icon-btn.success { color: var(--accent); border-color: var(--accent-border); }

/* ============================================================
   Formularios
   ============================================================ */
.modern-input,
input[type="text"], input[type="password"], input[type="email"],
input[type="search"], textarea, select {
    width: 100%;
    padding: .7rem .9rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    color: var(--text-primary);
    font-size: .925rem;
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.modern-input:focus, input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
::placeholder { color: var(--text-muted); opacity: 1; }

input:-webkit-autofill,
input:-webkit-autofill:focus {
    -webkit-text-fill-color: var(--text-primary);
    -webkit-box-shadow: 0 0 0 1000px var(--bg-input) inset;
    caret-color: var(--text-primary);
}

/* Quita la X nativa del input search en Chrome */
input[type="search"]::-webkit-search-cancel-button { -webkit-appearance: none; }

/* ============================================================
   Tarjetas
   ============================================================ */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: var(--sp-5);
    box-shadow: var(--shadow-md);
}
.card h2 {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: 1.15rem;
    margin-bottom: var(--sp-2);
}
.card h2 i { color: var(--accent); font-size: 1rem; }
.desc {
    color: var(--text-secondary);
    font-size: .875rem;
    margin-bottom: var(--sp-4);
}

/* ============================================================
   Selector de idioma (compartido en todas las páginas)
   ============================================================ */
.lang-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 3px;
    gap: 2px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    flex: 0 0 auto;
}
.lang-switch a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    padding: .2rem .5rem;
    border-radius: var(--r-full);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-muted);
    transition: var(--t-fast);
}
.lang-switch a:hover { color: var(--text-primary); }
.lang-switch a.active {
    background: var(--accent);
    color: var(--accent-contrast);
}

/* ============================================================
   Utilidades
   ============================================================ */
.highlight { color: var(--accent); }
.highlight-link { color: var(--accent); font-weight: 600; }
.highlight-link:hover { color: var(--accent-hover); text-decoration: underline; }

.badge {
    display: inline-flex;
    align-items: center;
    padding: .25rem .7rem;
    border-radius: var(--r-full);
    border: 1px solid var(--border-strong);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-secondary);
}
.badge.is-on { color: var(--accent); border-color: var(--accent-border); background: var(--accent-soft); }
.badge.is-off { color: var(--danger); border-color: var(--danger-soft); background: var(--danger-soft); }

.status-message { font-size: .85rem; min-height: 1.2em; margin-top: var(--sp-2); }
.status-message.is-ok { color: var(--accent); }
.status-message.is-error { color: var(--danger); }

.visually-hidden {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}