/* ══════════════════════════════════════════════════════
   LOGIN PAGE — CSS
   Sistema de tokens con soporte claro/oscuro
   ══════════════════════════════════════════════════════ */

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

/* ══ TEMA CLARO (por defecto) ═══════════════════════════ */
:root {
    --bg:         #f8f9fa;
    --bg-2:       #ffffff;
    --bg-3:       #e9ecef;
    --bg-4:       #dee2e6;
    --border:     #ced4da;
    --border-hi:  #adb5bd;

    --text:       #212529;
    --text-muted: #6c757d;
    --text-dim:   #adb5bd;

    --accent:     #0d6efd;
    --accent-dim: rgba(13,110,253,.10);
    --accent-glow:rgba(13,110,253,.22);

    --red:        #dc3545;
    --red-dim:    rgba(220,53,69,.12);

    --font-display: 'Roboto Condensed', sans-serif;
    --font-mono:    'DM Mono', monospace;
}

/* ══ TEMA OSCURO ═══════════════════════════════════════ */
[data-theme="dark"] {
    --bg:         #0e0f11;
    --bg-2:       #14161a;
    --bg-3:       #1c1f25;
    --bg-4:       #23272f;
    --border:     #2a2e38;
    --border-hi:  #3d4356;

    --text:       #e2e4eb;
    --text-muted: #6b7180;
    --text-dim:   #454b5c;

    --accent:     #e8ff47;
    --accent-dim: rgba(232,255,71,.10);
    --accent-glow:rgba(232,255,71,.22);

    --red:        #ff5555;
    --red-dim:    rgba(255,85,85,.12);
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

/* ── Fondo con grilla ────────────────────────────────── */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.grid-lines {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: .35;
    animation: driftGrid 30s linear infinite;
}

@keyframes driftGrid {
    from { transform: translate(0, 0); }
    to   { transform: translate(48px, 48px); }
}

/* Viñeta sobre la grilla */
.login-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 20%, var(--bg) 80%);
}

/* ── Wrap centrado ───────────────────────────────────── */
.login-wrap {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    gap: 16px;
}

/* ── Card ────────────────────────────────────────────── */
.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-2);
    border: 1px solid var(--border-hi);
    border-radius: 14px;
    padding: 36px 36px 40px;
    box-shadow:
        0 0 0 1px rgba(0,0,0,.05),
        0 24px 64px rgba(0,0,0,.15);
    animation: cardIn .4s cubic-bezier(.16,1,.3,1) both;
    position: relative;
}

[data-theme="dark"] .login-card {
    box-shadow:
        0 0 0 1px rgba(255,255,255,.03),
        0 24px 64px rgba(0,0,0,.6),
        0 0 80px rgba(232,255,71,.04);
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(24px) scale(.97); }
    to   { opacity: 1; transform: translateY(0)    scale(1);   }
}

/* ── Theme toggle button ─────────────────────────────── */
.btn-theme {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-3);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all .2s ease;
}

.btn-theme:hover {
    background: var(--bg-4);
    color: var(--text);
    border-color: var(--border-hi);
}

.theme-icon-light { display: block; }
.theme-icon-dark { display: none; }

[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: block; }

/* ── Brand ───────────────────────────────────────────── */
.card-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.brand-icon {
    font-size: 24px;
    color: var(--accent);
    line-height: 1;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
}

/* ── Títulos ─────────────────────────────────────────── */
.card-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.card-sub {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* ── Alert error ─────────────────────────────────────── */
.alert-error {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--red-dim);
    border: 1px solid var(--red);
    border-radius: 6px;
    color: var(--red);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 10px 14px;
    margin-bottom: 20px;
    animation: shakeIn .35s ease both;
}

@keyframes shakeIn {
    0%   { transform: translateX(-6px); opacity: 0; }
    40%  { transform: translateX(4px); }
    70%  { transform: translateX(-2px); }
    100% { transform: translateX(0);  opacity: 1; }
}

.alert-icon { font-size: 14px; flex-shrink: 0; }

/* ── Form fields ─────────────────────────────────────── */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

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

.field-label {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.field-input {
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 11px 14px;
    width: 100%;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}

.field-input::placeholder { color: var(--text-dim); }

.field-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ── Password toggle ─────────────────────────────────── */
.pass-wrap {
    position: relative;
}

.pass-wrap .field-input {
    padding-right: 44px;
}

.pass-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 15px;
    color: var(--text-muted);
    padding: 4px;
    line-height: 1;
    transition: color .15s;
}

.pass-toggle:hover { color: var(--text); }

/* ── Submit button ───────────────────────────────────── */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 20px;
    margin-top: 4px;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    color: #ffffff;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    cursor: pointer;
    transition: opacity .15s, transform .1s, box-shadow .2s;
    box-shadow: 0 0 0 0 var(--accent-glow);
}

[data-theme="dark"] .btn-login {
    color: #0e0f11;
}

.btn-login:hover {
    opacity: .9;
    box-shadow: 0 0 24px var(--accent-glow);
}

.btn-login:active { transform: scale(.98); }

.btn-arrow {
    font-size: 16px;
    transition: transform .2s;
}

.btn-login:hover .btn-arrow { transform: translateX(4px); }

/* ── Footer ──────────────────────────────────────────── */
.login-footer {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    text-align: center;
    animation: cardIn .4s .15s cubic-bezier(.16,1,.3,1) both;
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 480px) {
    .login-card { padding: 28px 20px 32px; }
    .card-title { font-size: 18px; }
}