/* Unidos es más fácil: hoja de estilos e identidad institucional SICOAS */

:root {
    --brand-navy: #143259;
    --brand-blue: #519BE9;
    --brand-blue-dark: #3D7CC4;
    --brand-blue-light: #EBF4FE;
    --brand-coral: #D44A59;
    --brand-coral-light: #FDF2F3;
    --brand-beige: #F0C6A3;
    --bg-light: #F5F9FF;
    --surface-light: #FFFFFF;
    --surface-card: rgba(255, 255, 255, 0.94);
    --border-light: rgba(81, 155, 233, 0.18);
    --border-hover: rgba(81, 155, 233, 0.45);
    --text-primary: #143259;
    --text-body: #2D3748;
    --text-muted: #475569;
    --text-dim: #64748B;
    --success: #10B981;
    --success-light: #ECFDF5;
    --warning: #F59E0B;
    --error: #EF4444;
    --error-light: #FEF2F2;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-subtle: 0 4px 20px rgba(20, 50, 89, 0.05);
    --shadow-card: 0 15px 40px rgba(20, 50, 89, 0.08);
    --shadow-hover: 0 20px 45px rgba(81, 155, 233, 0.18);
    --transition: background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-light);
    background: linear-gradient(180deg, #F5F9FF 0%, #FFFFFF 50%, #F8FAFC 100%);
    color: var(--text-body);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Patrón difuminado de fondo con colores de marca */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 8% 15%, rgba(81, 155, 233, 0.18) 0%, transparent 45%),
        radial-gradient(circle at 92% 75%, rgba(212, 74, 89, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 50% 10%, rgba(240, 198, 163, 0.22) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(81, 155, 233, 0.12) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

/* Header */
.unidos-header {
    height: 75px;
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(16px);
    background: rgba(255, 255, 255, 0.88);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    box-shadow: 0 2px 12px rgba(20, 50, 89, 0.03);
}

.unidos-brand {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    gap: 14px;
    text-decoration: none;
}

.unidos-logo-img {
    height: 38px;
    width: auto;
    filter: drop-shadow(0 2px 8px rgba(81, 155, 233, 0.2));
}

.unidos-brand-title {
    font-family: 'Outfit', sans-serif;
    font-size: 19px;
    font-weight: 800;
    color: var(--brand-navy);
    letter-spacing: -0.5px;
}

.unidos-brand-subtitle {
    font-size: 11.5px;
    color: var(--brand-navy);
    font-weight: 700;
    letter-spacing: 0.3px;
}

/* Hero Section */
.hero-section {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 40px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    color: var(--brand-navy);
}

.hero-highlight {
    color: #1E5AA8;
}

.hero-desc {
    font-size: 15.5px;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 26px;
}

.pill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 30px;
    background: rgba(81, 155, 233, 0.14);
    border: 1px solid rgba(20, 50, 89, 0.22);
    color: var(--brand-navy);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 16px;
}

/* Auth Card */
.auth-card {
    background: var(--surface-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 34px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand-blue) 0%, var(--brand-coral) 100%);
}

.auth-card h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-navy);
    margin-bottom: 6px;
}

.auth-card p {
    font-size: 13.5px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.form-input {
    width: 100%;
    min-height: 44px;
    padding: 11px 16px;
    background: #FFFFFF;
    border: 1px solid rgba(20, 50, 89, 0.28);
    border-radius: var(--radius-sm);
    color: var(--brand-navy);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.form-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-input:focus {
    background: #FFFFFF;
    border-color: #1E5AA8;
    box-shadow: 0 0 0 3.5px rgba(81, 155, 233, 0.18);
}

.form-input:focus:not(:focus-visible) {
    outline: none;
}

.form-input:focus-visible {
    outline: 2.5px solid var(--brand-navy);
    outline-offset: 2px;
}

.code-input-wrapper {
    position: relative;
}

.code-status-badge {
    margin-top: 8px;
    padding: 7px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    display: none;
    align-items: center;
    gap: 6px;
}
.code-status-badge.valid {
    display: flex;
    background: var(--success-light);
    color: #065F46;
    border: 1px solid rgba(16, 185, 129, 0.35);
}
.code-status-badge.invalid {
    display: flex;
    background: var(--error-light);
    color: #991B1B;
    border: 1px solid rgba(239, 68, 68, 0.35);
}

.btn-primary {
    width: 100%;
    min-height: 44px;
    padding: 12px 18px;
    background-color: #143259;
    background-image: linear-gradient(135deg, #1E5AA8 0%, #143259 100%);
    border: none;
    border-radius: var(--radius-sm);
    color: #FFFFFF;
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(20, 50, 89, 0.22);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background-color: #0F2544;
    background-image: linear-gradient(135deg, #143259 0%, #0F2544 100%);
    box-shadow: 0 8px 24px rgba(20, 50, 89, 0.32);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Feature Grid */
.features-container {
    max-width: 1200px;
    margin: 60px auto 40px;
    padding: 0 24px;
}

.features-container h2 {
    color: var(--brand-navy);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-box {
    background: var(--surface-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-subtle);
}

.feature-box:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-hover);
    background: #FFFFFF;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(81, 155, 233, 0.14);
    color: var(--brand-navy);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 18px;
    transition: var(--transition);
}

.feature-box:hover .feature-icon {
    transform: scale(1.08);
}

.feature-box h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--brand-navy);
    margin-bottom: 8px;
}

.feature-box p {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.55;
}

/* Diseño responsivo y optimización móvil */

/* Utilidades para visibilidad */
.hide-on-mobile {
    display: inherit;
}
.show-on-mobile {
    display: none;
}

@media (max-width: 900px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 32px;
        margin: 24px auto;
        padding: 0 18px;
    }

    .hero-content h1 {
        font-size: 30px;
    }

    .unidos-header {
        padding: 0 20px;
        height: auto;
        min-height: 64px;
    }

    .auth-card {
        padding: 26px 20px;
    }
}

@media (max-width: 640px) {
    .hide-on-mobile {
        display: none !important;
    }
    .show-on-mobile {
        display: block !important;
    }

    /* Header en Celular */
    .unidos-header {
        padding: 10px 16px;
        min-height: 60px;
    }

    .unidos-brand-title {
        font-size: 16px;
    }

    .unidos-brand-subtitle {
        font-size: 9.5px;
    }

    .unidos-logo-img {
        height: 32px;
    }

    /* Hero en Celular */
    .hero-section {
        margin: 16px auto 28px;
        padding: 0 14px;
        gap: 24px;
    }

    .hero-content {
        text-align: center;
    }

    .hero-content h1 {
        font-size: 24px;
        line-height: 1.22;
        margin-bottom: 12px;
    }

    .hero-desc {
        font-size: 13.5px;
        line-height: 1.55;
        margin-bottom: 18px;
    }

    .pill-tag {
        font-size: 11px;
        padding: 5px 12px;
    }

    /* Tarjeta de Login en Celular */
    .auth-card {
        padding: 20px 16px;
        border-radius: var(--radius-md);
    }

    .auth-card h2 {
        font-size: 19px;
        text-align: center;
    }

    .auth-card p {
        font-size: 12.5px;
        text-align: center;
        margin-bottom: 18px;
    }

    .form-input, .form-input select {
        padding: 11px 14px;
        font-size: 16px; /* Evita zoom automático en Safari iOS */
    }

    .btn-primary {
        padding: 13px;
        font-size: 14px;
    }

    /* Grilla de características en celular */
    .features-container {
        margin: 40px auto 24px;
        padding: 0 16px;
    }

    .features-container h2 {
        font-size: 20px !important;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-box {
        padding: 20px 18px;
    }

    /* Footer en Celular */
    footer {
        padding: 24px 16px !important;
        font-size: 11.5px !important;
    }
}

/* Motor de evaluación, accesibilidad y estados de autenticación */

.exam-choice-btn {
    appearance: none;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.exam-choice-btn:hover:not(:disabled) {
    border-color: var(--brand-blue) !important;
    background: #F0F7FF !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(81, 155, 233, 0.12);
}

.exam-choice-btn:active:not(:disabled) {
    transform: scale(0.99);
}

.exam-choice-btn:focus-visible {
    outline: 2.5px solid var(--brand-navy);
    outline-offset: 2px;
}

.exam-question-card {
    transition: var(--transition);
}

.exam-question-card:hover {
    border-color: rgba(81, 155, 233, 0.35) !important;
}

.exam-notice-banner {
    animation: fadeInExam 0.35s ease-out;
}

.exam-attempt-card {
    animation: slideDownExam 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInExam {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDownExam {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Accesibilidad de teclado y estados interactivos para autenticación pública */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2.5px solid var(--brand-navy);
    outline-offset: 2px;
}

.auth-step-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 10px 12px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.auth-step-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    color: #475569;
}

.auth-step-pill.active {
    color: var(--brand-navy);
}

.auth-step-pill.done {
    color: #065F46;
}

.auth-step-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 800;
    background: #CBD5E1;
    color: #1E293B;
    flex-shrink: 0;
}

.auth-step-pill.active .auth-step-num {
    background: var(--brand-navy);
    color: #FFFFFF;
}

.auth-step-pill.done .auth-step-num {
    background: #047857;
    color: #FFFFFF;
}

.auth-step-divider {
    flex: 1;
    height: 1px;
    background: #CBD5E1;
    min-width: 12px;
}

.verified-email-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 14px;
    margin-bottom: 16px;
    border-radius: var(--radius-sm);
    background: #ECFDF5;
    border: 1.5px solid #34D399;
    color: #065F46;
    font-size: 12.5px;
    font-weight: 600;
}

.btn-text-inline {
    background: transparent;
    border: none;
    color: #1D4ED8;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    padding: 8px 10px;
    border-radius: 6px;
    text-decoration: underline;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-text-inline:hover:not(:disabled) {
    color: var(--brand-navy);
    background: rgba(81, 155, 233, 0.1);
}

.btn-text-inline:disabled {
    color: #475569;
    text-decoration: none;
    cursor: not-allowed;
}

.btn-secondary-outline {
    width: 100%;
    min-height: 44px;
    padding: 11px 16px;
    background: #FFFFFF;
    border: 1.5px solid #94A3B8;
    border-radius: var(--radius-sm);
    color: var(--brand-navy);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-secondary-outline:hover:not(:disabled) {
    border-color: var(--brand-navy);
    background: #F8FAFC;
}

.btn-secondary-outline:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper .form-input {
    min-height: 48px;
    padding-right: 50px;
}

.password-toggle-btn {
    position: absolute;
    right: 2px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    color: #475569;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.password-toggle-btn:hover {
    color: var(--brand-navy);
    background: #F1F5F9;
}

.otp-code-input {
    text-align: center;
    font-family: monospace;
    font-size: 22px !important;
    font-weight: 800 !important;
    letter-spacing: 8px;
    padding: 12px 16px !important;
}

.auth-alert-box {
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 12.5px;
    font-weight: 600;
    line-height: 1.45;
    display: none;
    align-items: flex-start;
    gap: 10px;
    text-align: left;
}

.auth-alert-box.is-visible {
    display: flex;
}

.auth-alert-box.success {
    background: #ECFDF5;
    border: 1.5px solid #10B981;
    color: #065F46;
}

.auth-alert-box.error {
    background: #FEF2F2;
    border: 1.5px solid #EF4444;
    color: #991B1B;
}

.auth-alert-box.warning {
    background: #FFFBEB;
    border: 1.5px solid #F59E0B;
    color: #92400E;
}

.login-method-switch {
    display: flex;
    gap: 6px;
    padding: 4px;
    background: #F1F5F9;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
}

.login-method-btn {
    flex: 1;
    min-height: 44px;
    padding: 9px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #475569;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.login-method-btn.active {
    background: #FFFFFF;
    color: var(--brand-navy);
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

.password-hint-text {
    font-size: 11.5px;
    color: #475569;
    margin-top: 5px;
    line-height: 1.4;
}

.password-hint-text.valid {
    color: #065F46;
    font-weight: 600;
}

input[type="range"] {
    min-height: 44px;
    background: transparent;
    cursor: pointer;
}

@media (max-width: 640px) {
    .two-col-mobile-stack {
        grid-template-columns: 1fr !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    body.printing-certificate * {
        visibility: hidden !important;
    }
    body.printing-certificate #certificateContainer,
    body.printing-certificate #certificateContainer * {
        visibility: visible !important;
    }
    body.printing-certificate #certificateContainer {
        position: absolute !important;
        left: 0 !important;
        top: 0 !important;
        width: 100% !important;
        margin: 0 !important;
    }
    body.printing-certificate .no-print-cert {
        display: none !important;
    }
}