:root {
    --login-primary: #0f4c81;
    --login-primary-dark: #0a3560;
    --login-accent: #00a896;
    --login-accent-light: #02c39a;
    --login-surface: #ffffff;
    --login-text: #1a2332;
    --login-text-muted: #6b7a90;
    --login-border: #e2e8f0;
    --login-shadow: 0 25px 50px -12px rgba(15, 76, 129, 0.18);
    --login-radius: 14px;
}

* {
    box-sizing: border-box;
}

.login-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f0f4f8;
    color: var(--login-text);
}

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

/* ── Left branding panel ── */
.login-brand {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 4rem;
    background: linear-gradient(145deg, var(--login-primary-dark) 0%, var(--login-primary) 45%, #1565a8 100%);
    color: #fff;
    overflow: hidden;
}

.login-brand::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
}

.login-brand::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -60px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(0, 168, 150, 0.15);
}

.login-brand-content {
    position: relative;
    z-index: 1;
    max-width: 480px;
}

.login-logo {
    display: flex;
    align-items: center;
    margin-bottom: 2.5rem;
}

.ptac-logo {
    display: block;
    width: auto;
    object-fit: contain;
}

.ptac-logo--login-brand {
    max-height: 56px;
    background: #fff;
    padding: 0.5rem 0.85rem;
    border-radius: 10px;
}

.ptac-logo--login-card {
    max-height: 48px;
}

.ptac-logo--header {
    max-height: 40px;
}

.login-logo-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.login-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.login-brand h1 {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.login-brand p {
    font-size: 1.05rem;
    line-height: 1.7;
    opacity: 0.85;
    margin-bottom: 2.5rem;
}

.login-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    opacity: 0.9;
}

.login-feature-icon {
    width: 36px;
    height: 36px;
    background: rgba(0, 168, 150, 0.25);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ── Stats cards on brand panel ── */
.login-stats {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.login-stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    flex: 1;
}

.login-stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--login-accent-light);
}

.login-stat-card .stat-label {
    font-size: 0.75rem;
    opacity: 0.75;
    margin-top: 0.15rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── Right form panel ── */
.login-form-panel {
    flex: 0 0 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--login-surface);
}

.login-card {
    width: 100%;
    max-width: 400px;
}

.login-card-header {
    margin-bottom: 2rem;
}

.login-card-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    color: var(--login-text);
}

.login-card-header p {
    color: var(--login-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

.login-alert {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.login-alert-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

/* ── Form fields ── */
.login-field {
    margin-bottom: 1.25rem;
}

.login-field label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--login-text);
    margin-bottom: 0.5rem;
}

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

.login-input-wrap .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-text-muted);
    pointer-events: none;
    display: flex;
}

.login-input-wrap input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 0.95rem;
    font-family: inherit;
    border: 1.5px solid var(--login-border);
    border-radius: 10px;
    background: #fafbfc;
    color: var(--login-text);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.login-input-wrap input::placeholder {
    color: #a0aec0;
}

.login-input-wrap input:focus {
    outline: none;
    border-color: var(--login-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
}

.login-toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--login-text-muted);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

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

/* ── Options row ── */
.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.75rem;
    font-size: 0.875rem;
}

.login-remember {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--login-text-muted);
    user-select: none;
}

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

.login-forgot {
    color: var(--login-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* ── Submit button ── */
.login-btn {
    width: 100%;
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    color: #fff;
    background: linear-gradient(135deg, var(--login-primary) 0%, #1565a8 100%);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.2s;
    box-shadow: 0 4px 14px rgba(15, 76, 129, 0.35);
    letter-spacing: 0.01em;
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.45);
}

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

/* ── Footer ── */
.login-footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--login-text-muted);
}

.login-footer a {
    color: var(--login-primary);
    font-weight: 600;
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.75rem 0;
    color: var(--login-text-muted);
    font-size: 0.8rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--login-border);
}

/* ── Mobile brand bar ── */
.login-mobile-brand {
    display: none;
    align-items: center;
    margin-bottom: 2rem;
}

/* ── Responsive ── */
@media (max-width: 991px) {
    .login-page {
        min-height: 100vh;
        min-height: 100dvh;
    }

    .login-brand {
        display: none;
    }

    .login-form-panel {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        min-height: 100dvh;
        padding: max(1rem, env(safe-area-inset-top, 0px)) 1.25rem max(1rem, env(safe-area-inset-bottom, 0px));
        background: linear-gradient(180deg, #f0f4f8 0%, #fff 40%);
    }

    .login-card {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .login-mobile-brand {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        margin-bottom: 1.75rem;
        margin-top: 0;
    }

    .login-card-header {
        display: none;
    }

    .login-options {
        display: none;
    }

    .login-divider,
    .login-footer {
        display: none;
    }

    .login-card {
        max-width: 440px;
    }

    .login-mobile-brand .ptac-logo--login-card {
        margin: 0 auto;
    }

    .login-field:first-of-type {
        margin-top: 0;
    }
}

@media (max-width: 480px) {
    .login-form-panel {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .login-mobile-brand {
        margin-bottom: 1.5rem;
    }
}