/* -------------------------------------------------------------------------
   AUTHENTICATION LAYOUT & THEME STYLES (LOGIN, REGISTER, PASSWORD RECOVERY)
   Theme 1: Monochrome | Theme 2: Sandstone
   Complete contrast, readability, spacing, and unified theme system.
   ------------------------------------------------------------------------- */

.auth-page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--theme-bg);
    color: var(--theme-text);
    font-family: var(--font-sans);
    margin: 0;
    padding: 0;
}

.auth-wrapper {
    display: grid;
    grid-template-columns: 46% 54%;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
}

/* =========================================================================
   LEFT BRAND / SHOWCASE PANEL (Theme Responsive)
   ========================================================================= */
.auth-showcase {
    position: relative;
    background: var(--showcase-bg) !important;
    color: var(--showcase-title);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-12) var(--space-10);
    overflow: hidden;
    border-right: 1px solid var(--showcase-border);
    box-sizing: border-box;
}

.auth-showcase-header {
    position: relative;
    z-index: 2;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 22px;
    font-weight: 900;
    color: var(--showcase-title);
    letter-spacing: 1px;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.brand-link:hover {
    opacity: 0.9;
}

.brand-link img {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: block;
}

/* Logo Frame Container with high visual separation */
.auth-logo-frame {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--showcase-logo-bg);
    border: 1px solid var(--showcase-logo-border);
    border-radius: 20px;
    padding: 6px;
    box-shadow: 0 4px 18px var(--showcase-logo-glow);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.auth-logo-frame img {
    border-radius: 14px;
    display: block;
}

.auth-showcase-wordmark {
    margin-top: 12px;
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--showcase-title);
}

.auth-showcase-tagline {
    margin-top: 4px;
    font-size: 14px;
    font-weight: 600;
    color: var(--showcase-subtitle);
}

.auth-showcase-content {
    position: relative;
    z-index: 2;
    max-width: 480px;
    padding: var(--space-4) 0;
}

.auth-showcase-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.25;
    margin-top: var(--space-4);
    margin-bottom: var(--space-2);
    color: var(--showcase-title);
    letter-spacing: -0.5px;
}

.auth-showcase-subtitle {
    font-size: 16px;
    font-weight: 600;
    color: var(--showcase-subtitle);
    margin-bottom: var(--space-8);
    line-height: 1.5;
}

.auth-feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    margin-bottom: var(--space-4);
}

.auth-feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: 15px;
    line-height: 1.55;
    font-weight: 500;
    color: var(--showcase-feature-text);
}

.auth-feature-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--showcase-icon-bg);
    color: var(--showcase-icon-color);
    border: 1px solid var(--showcase-icon-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.auth-feature-icon svg {
    stroke: currentColor;
}

.auth-showcase-footer {
    position: relative;
    z-index: 2;
    font-size: 13px;
    font-weight: 500;
    color: var(--showcase-footer);
    opacity: 1;
}

/* =========================================================================
   RIGHT FORM CONTAINER (Clean, Unified Theme Surface)
   ========================================================================= */
.auth-form-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-8);
    background: var(--theme-surface);
    overflow-y: auto;
    box-sizing: border-box;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: var(--space-4);
    box-sizing: border-box;
}

.auth-card-header {
    margin-bottom: var(--space-6);
    text-align: left;
}

.auth-card-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.auth-card-logo-name {
    font-size: 20px;
    font-weight: 900;
    letter-spacing: 1.5px;
    color: var(--theme-text);
}

.auth-card-logo-tagline {
    font-size: 12px;
    font-weight: 600;
    color: var(--warm-brown, var(--theme-text-muted));
    letter-spacing: 1px;
}

.auth-card-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--theme-text);
    margin-bottom: var(--space-1);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.auth-card-subtitle {
    font-size: 14px;
    font-weight: 600;
    color: var(--warm-brown, var(--theme-text-muted));
    margin-bottom: 0;
}

/* Form Groups & Inputs */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: var(--space-4);
    text-align: left;
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--theme-text-secondary);
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.form-input {
    width: 100%;
    height: 48px;
    padding: 12px 16px;
    font-size: 15px;
    font-family: var(--font-sans);
    background: var(--theme-input);
    color: var(--theme-input-text);
    border: 1px solid var(--theme-input-border);
    border-radius: 12px;
    box-sizing: border-box;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    outline: none;
}

.form-input::placeholder {
    color: var(--theme-input-placeholder);
    opacity: 0.85;
}

.form-input:focus {
    border-color: var(--theme-input-focus-border);
    box-shadow: 0 0 0 3px var(--theme-input-focus-ring);
}

.input-icon-right {
    padding-right: 44px;
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--theme-input-placeholder);
    padding: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast);
}

.password-toggle-btn:hover {
    color: var(--theme-text);
}

.form-error {
    font-size: 12px;
    font-weight: 500;
    color: var(--danger);
    margin-top: 3px;
    display: none;
}

.form-group.has-error .form-error {
    display: block;
}

.form-group.has-error .form-input {
    border-color: var(--danger);
}

/* Options Row (Remember Me & Forgot Password) */
.auth-form-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-1);
    margin-bottom: var(--space-5);
    font-size: 13px;
}

.auth-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--theme-text-secondary);
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.auth-checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--theme-accent);
}

.auth-link {
    color: var(--theme-accent);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.auth-link:hover {
    color: var(--theme-accent-hover);
    text-decoration: underline;
}

/* Buttons */
.btn-primary {
    background: var(--theme-accent);
    color: var(--btn-primary-text, #FFFFFF) !important;
    height: 50px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: background var(--transition-fast), transform var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.btn-primary:hover:not(:disabled) {
    background: var(--theme-accent-hover);
    color: var(--btn-primary-text, #FFFFFF) !important;
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.985);
}

.btn-full {
    width: 100%;
}

/* Demo Informational Card (Section 15) */
.auth-demo-card {
    margin-top: var(--space-4);
    padding: 12px 16px;
    background: var(--theme-bg);
    border: 1px dashed var(--theme-input-border);
    border-radius: var(--radius-md);
    font-size: 13px;
    line-height: 1.5;
    color: var(--theme-text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    box-sizing: border-box;
}

.auth-demo-card-icon {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--theme-accent);
}

.auth-demo-card strong {
    color: var(--theme-text);
    font-weight: 700;
}

/* Card Footer */
.auth-card-footer {
    margin-top: var(--space-6);
    text-align: center;
    font-size: 14px;
    color: var(--theme-text-secondary);
}

/* Password Strength Meter */
.password-meter {
    margin-top: 6px;
    margin-bottom: var(--space-3);
}

.password-meter-track {
    height: 4px;
    width: 100%;
    background: var(--theme-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 4px;
}

.password-meter-bar {
    height: 100%;
    width: 0%;
    transition: width var(--transition-smooth), background-color var(--transition-smooth);
    border-radius: var(--radius-full);
}

.password-meter-bar.weak { width: 25%; background: var(--danger); }
.password-meter-bar.fair { width: 50%; background: var(--warning); }
.password-meter-bar.good { width: 75%; background: var(--theme-accent); }
.password-meter-bar.strong { width: 100%; background: var(--success); }

.password-meter-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--theme-text-muted);
}

/* Single Column Centered Card (Forgot & Reset Password) */
.auth-centered-box {
    width: 100%;
    max-width: 440px;
    background: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--theme-shadow);
    box-sizing: border-box;
    margin: var(--space-4);
}

/* =========================================================================
   RESPONSIVE DESIGN (Mobile & Tablet)
   ========================================================================= */
@media (max-width: 960px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
        min-height: 100vh;
        min-height: 100dvh;
    }

    .auth-showcase {
        display: none;
    }

    .auth-form-container {
        padding: var(--space-8) var(--space-4);
        min-height: 100vh;
        min-height: 100dvh;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .auth-card {
        max-width: 420px;
        width: 100%;
        margin: auto;
    }

    .auth-card-title {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .auth-form-container {
        padding: var(--space-6) var(--space-3);
    }

    .auth-card {
        padding: var(--space-2);
    }

    .auth-card-title {
        font-size: 24px;
    }

    .form-input {
        height: 46px;
        font-size: 14px;
    }

    .btn-primary {
        height: 48px;
        font-size: 15px;
    }
}