/**
 * Schulportal – Login-Seite (SaaS-Design)
 * Hintergrundbild: public/img/login-campus.webp (vom Betreiber bereitgestellt)
 */

:root {
    --login-navy: #0a1628;
    --login-navy-deep: #060d18;
    --login-blue: #1e3a5f;
    --login-accent: #3b82f6;
    --login-accent-cyan: #06b6d4;
    --login-text: #f1f5f9;
    --login-text-muted: #94a3b8;
    --login-glass-bg: rgba(255, 255, 255, 0.06);
    --login-glass-border: rgba(255, 255, 255, 0.12);
    --login-input-bg: rgba(255, 255, 255, 0.05);
    --login-input-border: rgba(255, 255, 255, 0.1);
    --login-radius: 18px;
    --login-radius-sm: 12px;
    --login-transition: 0.2s ease;
    /* Fallback wenn kein Inline-Override gesetzt wird */
    --login-campus-image: none;
}

[data-bs-theme="light"] {
    --login-navy: #f0f4f8;
    --login-navy-deep: #e2e8f0;
    --login-blue: #cbd5e1;
    --login-text: #0f172a;
    --login-text-muted: #64748b;
    --login-glass-bg: rgba(255, 255, 255, 0.75);
    --login-glass-border: rgba(15, 23, 42, 0.08);
    --login-input-bg: rgba(255, 255, 255, 0.9);
    --login-input-border: rgba(15, 23, 42, 0.12);
}

/* ---- Base ---- */

.login-page {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--login-navy-deep);
    color: var(--login-text);
    -webkit-font-smoothing: antialiased;
}

.login-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

/* ---- Hero (left) ---- */

.login-hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 280px;
    padding: 2rem 1.5rem;
    overflow: hidden;
    background-color: var(--login-blue);
    background-image:
        linear-gradient(
            135deg,
            rgba(6, 13, 24, 0.88) 0%,
            rgba(10, 22, 40, 0.72) 50%,
            rgba(30, 58, 95, 0.65) 100%
        ),
        var(--login-campus-image);
    background-size: cover;
    background-position: center;
}

.login-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 13, 24, 0.5) 0%, transparent 60%);
    pointer-events: none;
}

.login-hero > * {
    position: relative;
    z-index: 1;
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.login-brand-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
}

.login-brand-name {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: #fff;
}

.login-hero-content {
    margin-top: auto;
    padding-top: 2rem;
}

.login-hero-headline {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: #fff;
    margin: 0 0 1rem;
}

.login-hero-description {
    font-size: 1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.75);
    margin: 0;
    max-width: 28rem;
}

.login-security-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    margin-top: 2rem;
    padding: 0.625rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.85);
}

.login-security-badge i {
    font-size: 1rem;
    color: var(--login-accent-cyan);
}

/* ---- Panel (right) ---- */

.login-panel {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 2rem 1.5rem;
    background-color: var(--login-navy-deep);
    overflow: hidden;
}

.login-panel::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.login-panel::after {
    content: '';
    position: absolute;
    bottom: -15%;
    left: -5%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.login-panel-dots {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 120px;
    height: 120px;
    opacity: 0.15;
    background-image: radial-gradient(circle, var(--login-text-muted) 1px, transparent 1px);
    background-size: 12px 12px;
    pointer-events: none;
}

/* ---- Login card (glassmorphism) ---- */

.login-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 2.5rem 2rem;
    background: var(--login-glass-bg);
    border: 1px solid var(--login-glass-border);
    border-radius: var(--login-radius);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: loginFadeIn 0.6s ease forwards;
}

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

.login-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--login-accent) 0%, var(--login-accent-cyan) 100%);
    box-shadow: 0 0 24px rgba(59, 130, 246, 0.4);
    font-size: 1.5rem;
    color: #fff;
}

.login-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    margin: 0 0 0.375rem;
    color: var(--login-text);
}

.login-card-subtitle {
    font-size: 0.9375rem;
    text-align: center;
    color: var(--login-text-muted);
    margin: 0 0 1.75rem;
}

/* ---- Form ---- */

.login-form .login-field {
    margin-bottom: 1.25rem;
}

.login-form .login-field:last-of-type {
    margin-bottom: 1.75rem;
}

.login-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--login-text);
    margin-bottom: 0.5rem;
}

.login-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.login-input-icon {
    position: absolute;
    left: 1rem;
    font-size: 1rem;
    color: var(--login-text-muted);
    pointer-events: none;
    z-index: 1;
}

.login-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--login-text);
    background: var(--login-input-bg);
    border: 1px solid var(--login-input-border);
    border-radius: var(--login-radius-sm);
    outline: none;
    transition:
        border-color var(--login-transition),
        box-shadow var(--login-transition),
        background-color var(--login-transition);
}

.login-input::placeholder {
    color: var(--login-text-muted);
    opacity: 0.7;
}

.login-input:focus {
    border-color: var(--login-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

[data-bs-theme="light"] .login-input:focus {
    background: #fff;
}

.login-input-wrap--password .login-input {
    padding-right: 2.75rem;
}

.login-password-toggle {
    position: absolute;
    right: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--login-text-muted);
    cursor: pointer;
    transition: color var(--login-transition), background-color var(--login-transition);
}

.login-password-toggle:hover {
    color: var(--login-text);
    background: rgba(255, 255, 255, 0.06);
}

.login-password-toggle:focus-visible {
    outline: 2px solid var(--login-accent);
    outline-offset: 2px;
}

/* ---- Alert ---- */

.login-alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: #fecaca;
    background: rgba(220, 38, 38, 0.15);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: var(--login-radius-sm);
}

[data-bs-theme="light"] .login-alert {
    color: #991b1b;
    background: #fef2f2;
    border-color: #fecaca;
}

/* ---- Submit button ---- */

.login-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    color: #fff;
    background: linear-gradient(135deg, var(--login-accent) 0%, var(--login-accent-cyan) 100%);
    border: none;
    border-radius: var(--login-radius-sm);
    cursor: pointer;
    transition:
        transform var(--login-transition),
        box-shadow var(--login-transition),
        opacity var(--login-transition);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}

.login-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
}

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

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

.login-submit i {
    font-size: 1.125rem;
    transition: transform var(--login-transition);
}

.login-submit:hover i {
    transform: translateX(3px);
}

/* ---- SSL footer ---- */

.login-ssl-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: var(--login-text-muted);
}

.login-ssl-hint i {
    font-size: 0.8125rem;
}

/* ---- Responsive ---- */

@media (min-width: 768px) {
    .login-hero {
        min-height: 320px;
        padding: 2.5rem;
    }
}

@media (min-width: 992px) {
    .login-layout {
        flex-direction: row;
    }

    .login-hero {
        flex: 0 0 48%;
        min-height: 100vh;
        min-height: 100dvh;
        padding: 2.5rem 3rem;
    }

    .login-panel {
        flex: 1;
        padding: 2.5rem;
    }

    .login-card {
        padding: 2.75rem 2.5rem;
    }
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .login-layout {
        flex-direction: row;
    }

    .login-hero {
        flex: 0 0 40%;
        min-height: 100vh;
        min-height: 100dvh;
    }
}

@media (prefers-reduced-motion: reduce) {
    .login-card {
        animation: none;
    }

    .login-submit,
    .login-submit i,
    .login-input,
    .login-password-toggle {
        transition: none;
    }
}