:root {
    --auth-primary: #0c4a6e;
    --auth-primary-dark: #082f49;
    --auth-accent: #06b6d4;
    --auth-accent-soft: #67e8f9;
    --auth-surface: #ffffff;
    --auth-text: #0f172a;
    --auth-muted: #64748b;
    --auth-border: #e2e8f0;
    --auth-radius: 16px;
    --auth-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.auth-login-page {
    font-family: 'Cairo', sans-serif;
    min-height: 100vh;
    background: #f1f5f9;
    color: var(--auth-text);
}

.auth-shell {
    display: flex;
    min-height: 100vh;
}

/* —— Brand panel (RTL: appears on the right) —— */
.auth-brand {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 3rem 3.5rem;
    background: linear-gradient(145deg, var(--auth-primary-dark) 0%, var(--auth-primary) 45%, #155e75 100%);
    color: #fff;
    overflow: hidden;
}

.auth-brand::before,
.auth-brand::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.auth-brand::before {
    width: 420px;
    height: 420px;
    top: -120px;
    left: -80px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.35) 0%, transparent 70%);
}

.auth-brand::after {
    width: 320px;
    height: 320px;
    bottom: -60px;
    right: -40px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
}

.auth-brand-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}

.auth-brand-inner {
    position: relative;
    z-index: 1;
}

.auth-brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.auth-brand-logo-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--auth-accent) 0%, #0891b2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(6, 182, 212, 0.4);
}

.auth-brand-logo-icon svg {
    width: 28px;
    height: 28px;
    color: #fff;
}

.auth-brand-logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.auth-brand-headline {
    font-size: clamp(1.75rem, 3vw, 2.35rem);
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 1rem;
    max-width: 22rem;
}

.auth-brand-headline span {
    color: var(--auth-accent-soft);
}

.auth-brand-desc {
    font-size: 1rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.78);
    max-width: 24rem;
    margin-bottom: 2.5rem;
}

.auth-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-feature {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    transition: background 0.2s ease, transform 0.2s ease;
}

.auth-feature:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-4px);
}

.auth-feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(6, 182, 212, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.auth-feature-icon svg {
    width: 20px;
    height: 20px;
    color: var(--auth-accent-soft);
}

.auth-feature-text strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.auth-feature-text span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.65);
}

.auth-brand-footer {
    position: relative;
    z-index: 1;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

/* —— Form panel —— */
.auth-form-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(12, 74, 110, 0.05) 0%, transparent 50%),
        #f8fafc;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--auth-surface);
    border-radius: var(--auth-radius);
    box-shadow: var(--auth-shadow);
    border: 1px solid rgba(255, 255, 255, 0.8);
    padding: 2.5rem 2.25rem;
    animation: authCardIn 0.5s ease-out;
}

@keyframes authCardIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-card-header .mobile-logo {
    display: none;
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--auth-primary) 0%, #155e75 100%);
    align-items: center;
    justify-content: center;
}

.auth-card-header .mobile-logo svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.auth-card-header h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--auth-text);
    margin-bottom: 0.35rem;
}

.auth-card-header p {
    font-size: 0.9rem;
    color: var(--auth-muted);
}

.auth-alert {
    padding: 0.875rem 1rem;
    border-radius: 10px;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.auth-alert ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.auth-alert-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #15803d;
}

.auth-field {
    margin-bottom: 1.25rem;
}

.auth-field label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #334155;
}

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

.auth-input-wrap .field-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: #94a3b8;
    pointer-events: none;
    transition: color 0.2s ease;
}

.auth-input-wrap input {
    width: 100%;
    padding: 0.8rem 2.75rem 0.8rem 2.75rem;
    border: 1.5px solid var(--auth-border);
    border-radius: 12px;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--auth-text);
    background: #f8fafc;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.auth-input-wrap input::placeholder {
    color: #94a3b8;
}

.auth-input-wrap input:hover {
    border-color: #cbd5e1;
}

.auth-input-wrap input:focus {
    border-color: var(--auth-accent);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.12);
}

.auth-input-wrap:focus-within .field-icon {
    color: var(--auth-accent);
}

.auth-input-wrap input.is-invalid {
    border-color: #f87171;
    background: #fffafb;
}

.auth-input-wrap .toggle-password {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: color 0.2s ease, background 0.2s ease;
}

.auth-input-wrap .toggle-password:hover {
    color: var(--auth-primary);
    background: rgba(12, 74, 110, 0.06);
}

.auth-input-wrap .toggle-password svg {
    width: 20px;
    height: 20px;
}

.auth-field-error {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.8125rem;
    color: #dc2626;
}

.auth-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.auth-remember {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.auth-remember input {
    width: 18px;
    height: 18px;
    accent-color: var(--auth-primary);
    cursor: pointer;
}

.auth-remember span {
    font-size: 0.875rem;
    color: #475569;
}

.auth-submit {
    width: 100%;
    padding: 0.9rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    cursor: pointer;
    background: linear-gradient(135deg, var(--auth-primary) 0%, #155e75 100%);
    box-shadow: 0 4px 14px rgba(12, 74, 110, 0.35);
    transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    position: relative;
    overflow: hidden;
}

.auth-submit::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.12) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.auth-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(12, 74, 110, 0.4);
}

.auth-submit:hover::before {
    transform: translateX(100%);
}

.auth-submit:active {
    transform: translateY(0);
}

.auth-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.auth-forgot {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-forgot a {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--auth-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* —— Responsive —— */
@media (max-width: 960px) {
    .auth-shell {
        flex-direction: column;
    }

    .auth-brand {
        padding: 2rem 1.5rem;
        min-height: auto;
    }

    .auth-brand-headline,
    .auth-brand-desc {
        max-width: none;
    }

    .auth-features {
        display: none;
    }

    .auth-brand-footer {
        display: none;
    }

    .auth-card-header .mobile-logo {
        display: flex;
    }

    .auth-form-panel {
        padding: 1.5rem 1rem 2.5rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
        box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
    }
}

@media (max-width: 380px) {
    .auth-card {
        padding: 1.5rem 1.25rem;
    }
}