/* ============================================================
   LOGIN SCREEN
   ============================================================ */
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a6dd4 0%, #3b8ef5 50%, #5ca8ff 100%);
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body.dark-mode .login-overlay {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1a2744 100%);
}

.login-card {
    background: var(--bg-white, #fff);
    border-radius: 16px;
    padding: 40px 36px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    text-align: center;
}

body.dark-mode .login-card {
    background: #1c1f28;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.login-logo {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, #2563EB, #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
}

.login-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-dark, #111);
    margin-bottom: 6px;
}

.login-subtitle {
    font-size: 13px;
    color: var(--text-muted, #6b7280);
    margin-bottom: 28px;
}

.login-field {
    text-align: left;
    margin-bottom: 16px;
}

.login-field label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted, #6b7280);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.login-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-subtle, #f9fafb);
    color: var(--text-dark, #111);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.login-field input:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

body.dark-mode .login-field input {
    background: #262933;
    border-color: #374151;
    color: #e5e7eb;
}

body.dark-mode .login-field input:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15);
}

.login-error {
    font-size: 13px;
    color: #ef4444;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 16px;
    text-align: left;
}

.login-btn {
    width: 100%;
    padding: 13px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #2563EB, #3b82f6);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.login-btn:hover {
    opacity: 0.9;
}

.login-btn:active {
    transform: scale(0.98);
}

@media (max-width: 440px) {
    .login-card {
        margin: 0 16px;
        padding: 32px 24px;
    }
}