/* ============================================================
   Login Page - Sistema de Encuestas ICAMI
   Login.css — Split-screen login with institutional branding
   ============================================================ */

/* ── Login Container ─────────────────────────────────── */
.login-container {
    display: flex;
    min-height: 100vh;
    background-color: var(--surface-bg);
}

/* ── Brand Panel (Left) ──────────────────────────────── */
.login-brand {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    color: var(--text-inverse);
    padding: var(--space-12);
    position: relative;
    overflow: hidden;
}

.login-brand::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 60%);
    animation: fadeIn 2s ease forwards;
}

.login-brand::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary), var(--color-accent));
}

.login-brand-logo {
    width: 90px;
    height: 90px;
    background: var(--color-accent);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-8);
    box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
    animation: scaleIn 0.6s ease forwards;
    position: relative;
    z-index: 1;
}

.login-brand h1 {
    font-size: var(--font-size-3xl);
    color: var(--text-inverse);
    margin-bottom: var(--space-4);
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.login-brand p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    max-width: 380px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.login-brand-features {
    display: flex;
    gap: var(--space-8);
    margin-top: var(--space-12);
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease 0.6s both;
}

.login-brand-feature {
    text-align: center;
}

.login-brand-feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-2);
    display: block;
}

.login-brand-feature-text {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

/* ── Form Panel (Right) ──────────────────────────────── */
.login-form-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    max-width: 560px;
    animation: slideInRight 0.5s ease forwards;
}

.login-form-wrapper {
    width: 100%;
    max-width: 420px;
}

.login-form-header {
    margin-bottom: var(--space-8);
}

.login-form-header h2 {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.login-form-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    margin-bottom: 0;
}

/* Form Inputs */
.login-form .form-group {
    margin-bottom: var(--space-5);
}

.login-form .form-control {
    padding: var(--space-4);
    font-size: var(--font-size-base);
    border-radius: var(--radius-lg);
    background-color: var(--surface-bg);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.login-form .form-control:focus {
    background-color: var(--surface-card);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-50);
}

.login-input-icon {
    position: relative;
}

.login-input-icon .form-control {
    padding-left: var(--space-12);
}

.login-input-icon .icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.login-input-icon .form-control:focus~.icon,
.login-input-icon .form-control:focus+.icon {
    color: var(--color-primary);
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--text-inverse);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 51, 102, 0.3);
    position: relative;
    overflow: hidden;
}

.login-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.5s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 51, 102, 0.4);
}

.login-btn:hover::after {
    left: 100%;
}

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

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

/* Error Message */
.login-error {
    background-color: var(--color-error-light);
    color: var(--color-error-dark);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
    display: none;
    align-items: center;
    gap: var(--space-2);
    animation: shake 0.4s ease;
    border-left: 3px solid var(--color-error);
}

.login-error.visible {
    display: flex;
}

/* Loader */
.login-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--text-inverse);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: var(--space-2);
}

.login-btn.loading .login-loader {
    display: inline-block;
}

.login-btn.loading .login-btn-text {
    opacity: 0.7;
}

/* Extra Links */
.login-extra {
    margin-top: var(--space-6);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 1024px) {
    .login-brand {
        padding: var(--space-8);
    }

    .login-brand-features {
        gap: var(--space-4);
    }
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
    }

    .login-brand {
        min-height: auto;
        padding: var(--space-8) var(--space-6);
    }

    .login-brand-logo {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-2xl);
        margin-bottom: var(--space-4);
    }

    .login-brand h1 {
        font-size: var(--font-size-2xl);
    }

    .login-brand p {
        font-size: var(--font-size-base);
    }

    .login-brand-features {
        display: none;
    }

    .login-form-panel {
        max-width: 100%;
        padding: var(--space-6);
    }
}