/* ============================================
   LOGIN PAGE CSS - BLUE THEME
   ============================================ */
:root {
    --primary-blue: #1a56db;
    --dark-blue: #1e3a5f;
    --light-blue: #3b82f6;
    --teal-blue: #0ea5e9;
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f5;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--white);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    padding: 45px 40px 40px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--teal-blue));
}

.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-header .logo {
    display: inline-block;
    margin-bottom: 20px;
}

.login-header .logo img {
    max-height: 60px;
    width: auto;
}

.login-header h1 {
    font-size: 1.8rem;
    color: var(--gray-900);
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.login-form .form-group {
    margin-bottom: 22px;
}

.login-form label {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.login-form label .text-danger {
    color: #dc3545;
}

.input-wrapper {
    position: relative;
}

.input-wrapper .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    font-size: 1rem;
    pointer-events: none;
    z-index: 2;
}

.login-form input {
    width: 100%;
    padding: 12px 14px 12px 44px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--gray-50);
    color: var(--gray-900);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.1);
}

.login-form input.is-invalid {
    border-color: #dc3545;
}

.login-form input.is-invalid:focus {
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

.login-form input::placeholder {
    color: var(--gray-500);
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    font-size: 1rem;
    padding: 5px;
    transition: var(--transition);
    z-index: 2;
}

.password-toggle:hover {
    color: var(--gray-700);
}

.password-strength {
    height: 3px;
    border-radius: 3px;
    margin-top: 8px;
    transition: var(--transition);
    display: none;
    background: var(--gray-300);
}

.password-strength.weak {
    background: #dc3545;
    width: 33%;
    display: block;
}

.password-strength.medium {
    background: #ffc107;
    width: 66%;
    display: block;
}

.password-strength.strong {
    background: #28a745;
    width: 100%;
    display: block;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    font-size: 0.9rem;
}

.form-options .remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--gray-600);
}

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

.form-options .forgot-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.form-options .forgot-link:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-login:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 86, 219, 0.3);
}

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

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.login-footer {
    text-align: center;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
    font-size: 0.9rem;
    color: var(--gray-600);
}

.login-footer a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.login-footer a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.alert {
    padding: 14px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
    border-left: 4px solid transparent;
}

.alert i {
    font-size: 1.1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.alert-danger {
    background: #fde8e8;
    color: #721c24;
    border-left-color: #dc3545;
}

.alert-danger i {
    color: #dc3545;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: #28a745;
}

.alert-success i {
    color: #28a745;
}

@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px 25px;
        margin: 10px;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }

    .form-options {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}