/* ===== CSS VARIABLES ===== */
:root {
    --primary: #0A8E8C;
    --primary-dark: #06706E;
    --primary-light: #E8F5F4;
    --primary-gradient: linear-gradient(135deg, #0A8E8C 0%, #06706E 100%);
    
    --bg-main: #F0F4F8;
    --bg-card: #FFFFFF;
    --bg-input: #F7FAFC;
    
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-muted: #A0AEC0;
    
    --border-color: #E2E8F0;
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 30px 60px -12px rgba(10, 142, 140, 0.3);
    
    --radius: 20px;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
    --bg-main: #0D1117;
    --bg-card: #161B22;
    --bg-input: #0D1117;
    
    --text-primary: #F0F6FC;
    --text-secondary: #C9D1D9;
    --text-muted: #8B949E;
    
    --border-color: #30363D;
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --shadow-hover: 0 30px 60px -12px rgba(10, 142, 140, 0.2);
    
    --primary-light: #1A2E2D;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: background var(--transition), color var(--transition);
    margin: 0;
}

/* ===== MAIN CONTAINER ===== */
.login-wrapper {
    width: 100%;
    max-width: 1200px;
    min-height: 650px;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    transition: all var(--transition);
    position: relative;
}

.login-wrapper:hover {
    box-shadow: var(--shadow-hover);
}

/* ===== LEFT SIDE - IMAGE ===== */
.login-image {
    background: var(--primary-gradient);
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

.login-image::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    animation: floatBg 15s ease-in-out infinite;
}

.login-image::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -30%;
    width: 70%;
    height: 70%;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
    animation: floatBg 20s ease-in-out infinite reverse;
}

@keyframes floatBg {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

/* Logo en la imagen */
.image-logo {
    position: relative;
    z-index: 2;
}

.image-logo h1 {
    color: #FFFFFF;
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.1;
}

.image-logo h1 span {
    display: block;
    font-weight: 300;
    font-size: 1.1rem;
    letter-spacing: 6px;
    opacity: 0.8;
    margin-top: 8px;
}

.image-logo .subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    font-weight: 300;
    margin-top: 12px;
    letter-spacing: 2px;
}

/* Contenido central de la imagen */
.image-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.image-content .big-icon {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 20px;
}

.image-content h2 {
    color: #FFFFFF;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.image-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.05rem;
    font-weight: 300;
    max-width: 80%;
    margin: 0 auto;
    line-height: 1.6;
}

/* Badge inferior */
.image-badge {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    font-weight: 300;
}

.image-badge .dot {
    width: 8px;
    height: 8px;
    background: #4ADE80;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* ===== RIGHT SIDE - FORM ===== */
.login-form {
    padding: 50px 45px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--bg-card);
    transition: background var(--transition);
}

/* Toggle Theme */
.theme-toggle {
    align-self: flex-end;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.theme-toggle:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 142, 140, 0.15);
}

.theme-toggle i {
    font-size: 1.1rem;
    transition: all var(--transition);
}

.theme-toggle .toggle-track {
    width: 40px;
    height: 22px;
    background: var(--border-color);
    border-radius: 50px;
    position: relative;
    transition: background var(--transition);
    flex-shrink: 0;
}

.theme-toggle .toggle-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: all var(--transition);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

[data-theme="dark"] .theme-toggle .toggle-thumb {
    left: 20px;
}

[data-theme="dark"] .theme-toggle .toggle-track {
    background: var(--primary);
}

/* Form Header */
.form-header {
    margin-bottom: 35px;
}

.form-header .brand-small {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.form-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
}

/* Alertas */
.alert {
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.4s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid #EF4444;
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border-left: 4px solid #10B981;
}

[data-theme="dark"] .alert-error {
    background: #2D1B1B;
    color: #FCA5A5;
}

[data-theme="dark"] .alert-success {
    background: #1B2D24;
    color: #6EE7B7;
}

/* Formulario */
.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-group label i {
    margin-right: 8px;
    color: var(--primary);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition);
}

.input-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(10, 142, 140, 0.12);
}

.input-wrapper .input-icon {
    padding: 0 0 0 16px;
    color: var(--text-muted);
    font-size: 1rem;
    transition: color var(--transition);
}

.input-wrapper:focus-within .input-icon {
    color: var(--primary);
}

.input-wrapper input {
    width: 100%;
    padding: 14px 16px 14px 12px;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    font-family: inherit;
}

.input-wrapper input::placeholder {
    color: var(--text-muted);
    font-weight: 300;
    font-size: 0.9rem;
}

/* Password toggle */
.toggle-password {
    padding: 0 16px 0 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition);
    background: transparent;
    border: none;
    font-size: 1rem;
}

.toggle-password:hover {
    color: var(--primary);
}

/* Opciones del formulario */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 10px;
}

.form-options label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.form-options label input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-options a {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
}

.form-options a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Botón Login */
.btn-login {
    width: 100%;
    padding: 15px;
    background: var(--primary-gradient);
    color: #FFFFFF;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.5px;
    font-family: inherit;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(10, 142, 140, 0.35);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login i {
    font-size: 1.1rem;
}

/* Credenciales de prueba */
.test-credentials {
    margin-top: 30px;
    padding: 20px 22px;
    background: var(--bg-input);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.test-credentials h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 600;
}

.test-credentials .cred-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 15px;
}

.test-credentials .cred-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 4px 0;
    flex-wrap: wrap;
}

.test-credentials .cred-item .role-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 50px;
    font-size: 0.65rem;
    font-weight: 700;
    background: var(--primary-light);
    color: var(--primary);
    min-width: 70px;
    text-align: center;
}

.test-credentials .cred-item .cred-pass {
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
}

/* ===== RESPONSIVE - TABLETS ===== */
@media (max-width: 1024px) {
    .login-wrapper {
        max-width: 900px;
    }
    
    .login-image {
        padding: 40px 30px;
    }
    
    .login-form {
        padding: 40px 35px;
    }
    
    .image-logo h1 {
        font-size: 2.2rem;
    }
    
    .image-content h2 {
        font-size: 1.8rem;
    }
    
    .image-content .big-icon {
        font-size: 4rem;
    }
}

/* ===== RESPONSIVE - TABLETS PEQUEÑAS Y MÓVILES GRANDES ===== */
@media (max-width: 820px) {
    .login-wrapper {
        grid-template-columns: 1fr;
        max-width: 550px;
        min-height: auto;
        border-radius: 16px;
    }

    .login-image {
        min-height: 200px;
        padding: 30px 30px 25px;
        border-radius: 16px 16px 0 0;
    }

    .image-content {
        display: none;
    }

    .image-logo h1 {
        font-size: 1.8rem;
    }

    .image-logo h1 span {
        font-size: 0.8rem;
        letter-spacing: 4px;
    }
    
    .image-logo .subtitle {
        font-size: 0.85rem;
    }

    .login-form {
        padding: 35px 30px;
        border-radius: 0 0 16px 16px;
    }

    .form-header h2 {
        font-size: 1.5rem;
    }
    
    .form-header p {
        font-size: 0.9rem;
    }
    
    .image-badge {
        font-size: 0.75rem;
    }
    
    .test-credentials .cred-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== RESPONSIVE - MÓVILES ===== */
@media (max-width: 480px) {
    body {
        padding: 10px;
        align-items: flex-start;
        padding-top: 20px;
    }

    .login-wrapper {
        border-radius: 12px;
        max-width: 100%;
    }
    
    .login-image {
        min-height: 150px;
        padding: 20px 20px 18px;
        border-radius: 12px 12px 0 0;
    }

    .image-logo h1 {
        font-size: 1.4rem;
    }

    .image-logo h1 span {
        font-size: 0.7rem;
        letter-spacing: 3px;
        margin-top: 4px;
    }

    .image-logo .subtitle {
        font-size: 0.7rem;
        margin-top: 6px;
        letter-spacing: 1px;
    }

    .login-form {
        padding: 25px 18px;
        border-radius: 0 0 12px 12px;
    }
    
    .form-header {
        margin-bottom: 25px;
    }
    
    .form-header .brand-small {
        font-size: 0.75rem;
        gap: 6px;
    }

    .form-header h2 {
        font-size: 1.3rem;
    }

    .form-header p {
        font-size: 0.8rem;
    }

    .form-group {
        margin-bottom: 16px;
    }
    
    .form-group label {
        font-size: 0.75rem;
    }
    
    .input-wrapper input {
        padding: 12px 12px 12px 10px;
        font-size: 0.85rem;
    }
    
    .input-wrapper .input-icon {
        padding: 0 0 0 12px;
        font-size: 0.85rem;
    }

    .form-options {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
        margin-bottom: 20px;
    }
    
    .form-options label {
        font-size: 0.8rem;
    }
    
    .form-options a {
        font-size: 0.8rem;
    }

    .btn-login {
        padding: 13px;
        font-size: 0.9rem;
        border-radius: 10px;
    }

    .theme-toggle {
        font-size: 0.7rem;
        padding: 5px 10px;
        gap: 6px;
        margin-bottom: 20px;
        align-self: flex-start;
    }

    .theme-toggle .toggle-track {
        width: 30px;
        height: 18px;
    }

    .theme-toggle .toggle-thumb {
        width: 14px;
        height: 14px;
        top: 2px;
        left: 2px;
    }

    [data-theme="dark"] .theme-toggle .toggle-thumb {
        left: 14px;
    }
    
    .theme-toggle i {
        font-size: 0.9rem;
    }
    
    /* Alertas en móvil */
    .alert {
        padding: 10px 14px;
        font-size: 0.8rem;
        border-radius: 8px;
    }
    
    /* Credenciales en móvil */
    .test-credentials {
        margin-top: 20px;
        padding: 15px 16px;
    }
    
    .test-credentials h4 {
        font-size: 0.7rem;
    }
    
    .test-credentials .cred-item {
        font-size: 0.7rem;
        gap: 4px;
    }
    
    .test-credentials .cred-item .role-badge {
        font-size: 0.55rem;
        min-width: 60px;
        padding: 2px 8px;
    }
    
    .test-credentials .cred-item .cred-pass {
        font-size: 0.65rem;
    }
}

/* ===== RESPONSIVE - MÓVILES MUY PEQUEÑOS ===== */
@media (max-width: 360px) {
    body {
        padding: 6px;
        padding-top: 12px;
    }
    
    .login-image {
        min-height: 120px;
        padding: 14px 14px 14px;
    }
    
    .image-logo h1 {
        font-size: 1.1rem;
    }
    
    .image-logo h1 span {
        font-size: 0.6rem;
        letter-spacing: 2px;
    }
    
    .image-logo .subtitle {
        font-size: 0.6rem;
        margin-top: 4px;
    }
    
    .login-form {
        padding: 18px 14px;
    }
    
    .form-header h2 {
        font-size: 1.1rem;
    }
    
    .input-wrapper input {
        padding: 10px 10px 10px 8px;
        font-size: 0.8rem;
    }
    
    .btn-login {
        padding: 11px;
        font-size: 0.8rem;
    }
    
    .image-badge {
        font-size: 0.6rem;
        gap: 6px;
    }
    
    .image-badge .dot {
        width: 6px;
        height: 6px;
    }
}

/* ===== UTILITY ===== */
.hidden {
    display: none !important;
}

/* ===== MEJORAS DE ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== SOPORTE PARA ORIENTACIÓN HORIZONTAL EN MÓVILES ===== */
@media (max-height: 600px) and (orientation: landscape) {
    body {
        align-items: flex-start;
        padding: 10px;
    }
    
    .login-wrapper {
        max-width: 700px;
        min-height: auto;
        grid-template-columns: 1fr 1.2fr;
    }
    
    .login-image {
        min-height: 100%;
        padding: 25px 20px;
    }
    
    .image-content {
        display: none;
    }
    
    .image-logo h1 {
        font-size: 1.4rem;
    }
    
    .image-logo h1 span {
        font-size: 0.7rem;
    }
    
    .image-logo .subtitle {
        font-size: 0.7rem;
    }
    
    .login-form {
        padding: 25px 20px;
    }
    
    .form-header {
        margin-bottom: 15px;
    }
    
    .form-header h2 {
        font-size: 1.3rem;
    }
    
    .form-group {
        margin-bottom: 12px;
    }
    
    .test-credentials {
        margin-top: 15px;
        padding: 12px 15px;
    }
    
    .theme-toggle {
        margin-bottom: 15px;
    }
}