:root {
    --auth-bg: #0a0a0a;
    --auth-bg-accent: #1a1a1a;
    --auth-card-border: rgba(255, 255, 255, 0.12);
    --auth-card-glow: rgba(255, 255, 255, 0.06);
    --auth-panel-dark: #000000;
    --auth-panel-light: #ffffff;
    --auth-text: #111111;
    --auth-text-muted: #5c5c5c;
    --auth-accent: #000000;
    --auth-accent-hover: #2a2a2a;
    --auth-input-border: rgba(0, 0, 0, 0.15);
    --auth-radius: 20px;
    --auth-radius-sm: 14px;
    --auth-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
    --auth-transition: 0.25s ease;
}

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

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

body.auth-page {
    font-family: 'Poppins', system-ui, -apple-system, sans-serif;
    background: radial-gradient(ellipse at 20% 0%, var(--auth-bg-accent) 0%, var(--auth-bg) 55%);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
             max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.particles {
    position: fixed;
    inset: 0;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    animation: authFloat 18s infinite linear;
}

.particle:nth-child(1) { width: 14px; height: 14px; left: 8%; animation-delay: 0s; }
.particle:nth-child(2) { width: 22px; height: 22px; left: 22%; animation-delay: 3s; }
.particle:nth-child(3) { width: 10px; height: 10px; left: 38%; animation-delay: 6s; }
.particle:nth-child(4) { width: 18px; height: 18px; left: 55%; animation-delay: 9s; }
.particle:nth-child(5) { width: 12px; height: 12px; left: 72%; animation-delay: 12s; }
.particle:nth-child(6) { width: 16px; height: 16px; left: 88%; animation-delay: 15s; }

@keyframes authFloat {
    0% { transform: translateY(105vh) rotate(0deg); opacity: 0; }
    8% { opacity: 0.7; }
    92% { opacity: 0.7; }
    100% { transform: translateY(-80px) rotate(360deg); opacity: 0; }
}

.auth-contenedor {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: min(1100px, 100%);
    margin: 0 auto;
}

.auth-card {
    background: var(--auth-card-glow);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--auth-radius);
    box-shadow: var(--auth-shadow);
    border: 1px solid var(--auth-card-border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: min(600px, auto);
    overflow: hidden;
    animation: authSlideUp 0.7s ease-out;
}

@keyframes authSlideUp {
    from { transform: translateY(28px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.auth-brand-panel {
    background: linear-gradient(160deg, var(--auth-panel-dark) 0%, #141414 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: clamp(24px, 4vw, 48px);
}

.auth-brand-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.auth-welcome {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #ffffff;
}

.auth-logo-oscuro {
    max-width: min(260px, 70vw);
    width: 100%;
    height: auto;
    margin-bottom: clamp(16px, 3vw, 28px);
    filter: brightness(0) invert(1);
    object-fit: contain;
}

.auth-welcome p {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    font-weight: 300;
    line-height: 1.65;
    opacity: 0.88;
    max-width: 320px;
    margin: 0 auto;
}

.auth-form-panel {
    padding: clamp(28px, 5vw, 56px) clamp(24px, 4vw, 48px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--auth-panel-light);
}

.auth-header {
    text-align: center;
    margin-bottom: clamp(24px, 4vw, 36px);
}

.auth-logo {
    width: clamp(64px, 12vw, 80px);
    height: clamp(64px, 12vw, 80px);
    margin-bottom: 16px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    object-fit: contain;
}

.auth-header h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 600;
    color: var(--auth-text);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--auth-text-muted);
    font-size: clamp(0.9rem, 2vw, 1.05rem);
    font-weight: 400;
}

.auth-formulario {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.input-grupo {
    position: relative;
    margin-bottom: 20px;
    transition: transform var(--auth-transition);
}

.input-grupo label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--auth-text);
    font-size: 1.1rem;
    z-index: 2;
    pointer-events: none;
    line-height: 1;
}

.input-grupo input {
    width: 100%;
    padding: 16px 16px 16px 52px;
    border: 1.5px solid var(--auth-input-border);
    border-radius: var(--auth-radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background: #fafafa;
    transition: border-color var(--auth-transition), box-shadow var(--auth-transition), background var(--auth-transition);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.input-grupo-password input {
    padding-right: 52px;
}

.input-grupo input:focus {
    border-color: var(--auth-accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

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

.input-grupo input::placeholder {
    color: #aaa;
    font-weight: 300;
}

.btn-toggle-pass {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    color: var(--auth-text-muted);
    cursor: pointer;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 3;
    transition: color var(--auth-transition), background var(--auth-transition);
}

.btn-toggle-pass:hover {
    color: var(--auth-text);
    background: rgba(0, 0, 0, 0.05);
}

.btn-toggle-pass:focus-visible {
    outline: 2px solid var(--auth-accent);
    outline-offset: 2px;
}

.btn-submit {
    width: 100%;
    padding: 16px 20px;
    border: none;
    border-radius: var(--auth-radius-sm);
    background: var(--auth-accent);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform var(--auth-transition), box-shadow var(--auth-transition), background var(--auth-transition);
    margin-bottom: 16px;
    position: relative;
    overflow: hidden;
    min-height: 52px;
}

.btn-submit:hover:not(:disabled) {
    background: var(--auth-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-submit.loading {
    pointer-events: none;
    color: transparent;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: authSpin 0.8s linear infinite;
    inset: 0;
}

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

.auth-link-wrap {
    text-align: center;
    margin-top: 8px;
}

.auth-link-wrap a {
    color: var(--auth-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.92rem;
    transition: color var(--auth-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    padding: 4px 0;
}

.auth-link-wrap a:hover {
    color: var(--auth-accent-hover);
}

.auth-link-wrap a:focus-visible {
    outline: 2px solid var(--auth-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

.auth-mobile-brand {
    display: none;
    text-align: center;
    padding: 20px 16px 0;
    background: linear-gradient(160deg, var(--auth-panel-dark) 0%, #141414 100%);
}

.auth-mobile-brand .auth-logo-oscuro {
    max-width: 180px;
    margin-bottom: 12px;
}

.auth-mobile-brand p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.88rem;
    font-weight: 300;
    line-height: 1.5;
    margin-bottom: 4px;
}

@media (max-width: 768px) {
    .auth-card {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .auth-brand-panel {
        display: none;
    }

    .auth-mobile-brand {
        display: block;
    }

    .auth-form-panel {
        padding-top: 24px;
    }

    .particle {
        opacity: 0.5;
    }
}

@media (max-width: 480px) {
    body.auth-page {
        align-items: flex-start;
        padding-top: max(12px, env(safe-area-inset-top));
    }

    .auth-contenedor {
        max-width: 100%;
    }

    .auth-card {
        border-radius: 16px;
    }

    .input-grupo input {
        font-size: 16px;
        padding-top: 15px;
        padding-bottom: 15px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .auth-form-panel {
        padding: 40px 32px;
    }

    .auth-brand-panel {
        padding: 32px 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .particle,
    .auth-card,
    .input-grupo {
        animation: none !important;
        transition: none !important;
    }
}