/* AbacusPro — Modern Login */
:root {
    --login-primary: #4f46e5;
    --login-primary-dark: #3730a3;
    --login-accent: #818cf8;
    --login-text: #0f172a;
    --login-muted: #64748b;
    --login-border: #e2e8f0;
    --login-card: rgba(255, 255, 255, 0.92);
}

* { box-sizing: border-box; }

body.login-page {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--login-text);
    -webkit-font-smoothing: antialiased;
}

.login-bg {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 70%, #4f46e5 100%);
    z-index: 0;
    overflow: hidden;
}

.login-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}

.login-bg-shape.shape-1 {
    width: 500px;
    height: 500px;
    background: #818cf8;
    top: -120px;
    right: -100px;
}

.login-bg-shape.shape-2 {
    width: 400px;
    height: 400px;
    background: #a78bfa;
    bottom: -80px;
    left: -80px;
}

.login-bg-shape.shape-3 {
    width: 250px;
    height: 250px;
    background: #6366f1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.15;
}

.login-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--login-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(15, 23, 42, 0.35);
    padding: 36px 32px 28px;
    animation: loginFadeIn 0.5s ease;
}

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

.login-card-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--login-primary), var(--login-accent));
    color: #fff;
    font-size: 28px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.login-card-header h1 {
    margin: 0 0 4px;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--login-text);
}

.login-card-header p {
    margin: 0;
    font-size: 13px;
    color: var(--login-muted);
}

.login-form { display: flex; flex-direction: column; gap: 18px; }

.login-field { display: flex; flex-direction: column; gap: 6px; }

.login-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--login-muted);
}

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

.login-icon {
    position: absolute;
    left: 14px;
    width: 18px;
    height: 18px;
    color: var(--login-muted);
    pointer-events: none;
}

.login-input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    font-size: 15px;
    border: 1.5px solid var(--login-border);
    border-radius: 12px;
    background: #fff;
    color: var(--login-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.login-input:focus {
    outline: none;
    border-color: var(--login-primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

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

.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: -4px;
}

.login-options .form-check-label {
    font-size: 13px;
    color: var(--login-muted);
}

.login-options .form-check-input:checked {
    background-color: var(--login-primary);
    border-color: var(--login-primary);
}

.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 20px;
    margin-top: 4px;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--login-primary), var(--login-primary-dark));
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    transition: transform 0.15s, box-shadow 0.15s;
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgba(79, 70, 229, 0.5);
}

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

.login-error {
    padding: 10px 14px;
    font-size: 13px;
    color: #991b1b;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    list-style: none;
    margin: 0;
}

.login-error:empty { display: none; }

.login-footer {
    margin-top: 24px;
    text-align: center;
    font-size: 12px;
    color: var(--login-muted);
}

@media (max-width: 480px) {
    .login-card {
        padding: 28px 22px 22px;
        border-radius: 16px;
    }

    .login-card-header h1 { font-size: 22px; }
}