/* ============================================================
   PDKS Login — Split Layout, Gradient Mesh, Form Styling
   ============================================================ */

/* === Login Page Shell === */

.login-page {
    display: flex;
    min-height: 100vh;
    overflow: hidden;
}

/* Override global texture overlay — login has its own atmosphere */
body.login-page::after {
    display: none;
}

/* === Left Panel: Atmosphere === */

.login-atmosphere {
    position: relative;
    flex: 0 0 55%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--login-gradient);
}

/* Atmosphere content */
.login-atmosphere__content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 40px;
}

.login-atmosphere__brand {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 400;
    color: var(--login-text);
    letter-spacing: -0.02em;
    line-height: 1;
    margin: 0;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.login-atmosphere__tagline {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.875rem;
    color: var(--login-text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-top: 16px;
}

.login-atmosphere__footer {
    position: absolute;
    bottom: 32px;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 1;
}

.login-atmosphere__copyright {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
}

/* === Right Panel: Form === */

.login-form-panel {
    flex: 0 0 45%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface-primary);
    padding: 48px 40px;
    position: relative;
}

/* Subtle noise on form panel */
.login-form-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.02;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

.login-form-container {
    width: 100%;
    max-width: 380px;
    position: relative;
    z-index: 1;
}

/* === Decorative Line === */

.login-brass-line {
    width: 32px;
    height: 2px;
    background-color: var(--border-color-strong);
    margin: 0 auto 28px;
    border-radius: 1px;
}

/* === Login Heading === */

.login-heading {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text-primary);
    text-align: center;
    margin: 0 0 8px;
}

.login-subtext {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin: 0 0 36px;
}

/* === Form Group === */

.login-field {
    margin-bottom: 24px;
}

.login-field__label {
    display: block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.login-field__input-wrapper {
    position: relative;
}

.login-field__input {
    display: block;
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-surface-secondary);
    border: 1px solid var(--border-color-strong);
    border-radius: var(--radius-sm);
    transition: border-color var(--duration-fast) var(--ease-out-quart),
                box-shadow var(--duration-fast) var(--ease-out-quart),
                background-color var(--duration-fast) var(--ease-out-quart);
}

.login-field__input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-primary-subtle);
    background-color: var(--color-surface-primary);
}

.login-field__input::placeholder {
    color: var(--color-text-tertiary);
}

/* Password toggle button */
.login-field__toggle {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--duration-fast) var(--ease-out-quart),
                background-color var(--duration-fast) var(--ease-out-quart);
}

.login-field__toggle:hover {
    color: var(--color-text-secondary);
    background-color: var(--color-surface-tertiary);
}

.login-field__toggle:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: -2px;
}

.login-field__toggle svg {
    width: 18px;
    height: 18px;
}

/* Password input needs right padding for toggle */
.login-field__input--password {
    padding-right: 44px;
}

/* Validation error */
.login-field__error {
    display: block;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--color-danger);
    margin-top: 6px;
    min-height: 0;
}

/* === Custom Checkbox === */

.login-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    margin-bottom: 24px;
}

.login-checkbox__input {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color-strong);
    border-radius: 4px;
    background-color: var(--color-surface-primary);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: border-color var(--duration-fast) var(--ease-out-quart),
                background-color var(--duration-fast) var(--ease-out-quart);
}

.login-checkbox__input:checked {
    border-color: var(--color-accent-primary);
    background-color: var(--color-accent-primary);
}

.login-checkbox__input:checked::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: solid var(--color-text-inverse);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.login-checkbox__input:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

.login-checkbox__label {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

/* === Login Button === */

.login-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    height: 48px;
    padding: 0 24px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.02em;
    color: var(--color-text-inverse);
    background-color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--duration-fast) var(--ease-out-quart),
                border-color var(--duration-fast) var(--ease-out-quart),
                transform var(--duration-fast) var(--ease-out-quart),
                box-shadow var(--duration-fast) var(--ease-out-quart);
}

.login-submit:hover {
    background-color: var(--color-accent-primary-hover);
    border-color: var(--color-accent-primary-hover);
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

.login-submit:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-xs);
}

.login-submit:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 3px;
}

/* === Forgot Password Link === */

.login-forgot {
    display: block;
    text-align: center;
    margin-top: 20px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    transition: color var(--duration-fast) var(--ease-out-quart);
    cursor: default;
}

.login-forgot:hover {
    color: var(--color-text-secondary);
}

/* === Validation Summary === */

.login-validation-summary {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 24px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    line-height: 1.5;
    animation: loginSlideDown var(--duration-normal) var(--ease-out-expo) both;
}

.login-validation-summary ul {
    margin: 0;
    padding-left: 18px;
}

.login-validation-summary li {
    margin-bottom: 2px;
}

.login-validation-summary:empty,
.login-validation-summary .validation-summary-valid {
    display: none;
}

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

/* === Staggered Entry Animations === */

.login-animate {
    opacity: 0;
    animation: loginFadeInUp var(--duration-reveal) var(--ease-out-expo) both;
}

@keyframes loginFadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-animate--delay-1 { animation-delay: 100ms; }
.login-animate--delay-2 { animation-delay: 160ms; }
.login-animate--delay-3 { animation-delay: 220ms; }
.login-animate--delay-4 { animation-delay: 280ms; }
.login-animate--delay-5 { animation-delay: 340ms; }
.login-animate--delay-6 { animation-delay: 400ms; }
.login-animate--delay-7 { animation-delay: 460ms; }
.login-animate--delay-8 { animation-delay: 520ms; }

/* Atmosphere panel entrance */
.login-atmosphere__content {
    opacity: 0;
    animation: loginFadeIn 1200ms var(--ease-out-expo) 200ms both;
}

@keyframes loginFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* === Access Denied Page === */

.access-denied {
    text-align: center;
    padding: 20px 0;
}

.access-denied__icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-danger-light);
    color: var(--color-danger);
}

.access-denied__icon svg {
    width: 32px;
    height: 32px;
}

.access-denied__title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--color-danger);
    margin: 0 0 8px;
}

.access-denied__text {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin: 0 0 24px;
}

.access-denied__alert {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    margin-bottom: 28px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
}

.access-denied__alert svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* === Responsive: Mobile === */

@media (max-width: 1024px) {
    .login-atmosphere {
        flex: 0 0 45%;
    }
    .login-form-panel {
        flex: 0 0 55%;
    }
    .login-atmosphere__brand {
        font-size: 3.5rem;
    }
}

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

    .login-atmosphere {
        display: none;
    }

    .login-form-panel {
        flex: 1;
        min-height: 100vh;
        padding: 32px 24px;
        background-color: var(--color-surface-primary);
    }

    .login-form-container {
        max-width: 100%;
    }

    /* Show mobile brand above form */
    .login-mobile-brand {
        display: block;
        text-align: center;
        margin-bottom: 40px;
    }

    .login-mobile-brand__title {
        font-family: var(--font-display);
        font-size: 2rem;
        color: var(--color-accent-primary);
        margin: 0;
        line-height: 1;
    }

    .login-mobile-brand__subtitle {
        font-family: var(--font-body);
        font-weight: 300;
        font-size: 0.75rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--color-text-tertiary);
        margin-top: 8px;
    }
}

@media (min-width: 769px) {
    .login-mobile-brand {
        display: none;
    }
}

/* === Print — hide login entirely === */
@media print {
    .login-page {
        display: none;
    }
}