/* ============================================
   AIBE Prep - Login Page Styles
   Location: assets/css/login.css
   ============================================
   Page-specific styles for login page
   Uses color variables from colors.css
   ============================================ */

/* ============================================
   LOGIN FORM CONTAINER
   ============================================ */
.form-container {
    max-width: 450px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: var(--color-background-white);
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

/* ============================================
   FORM INPUTS
   ============================================ */
.input-group-text {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border: none;
}

.form-control {
    border: 1px solid var(--color-border);
    padding: 0.75rem;
    transition: all 0.3s;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(26, 71, 42, 0.15);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

/* ============================================
   PASSWORD TOGGLE BUTTON
   ============================================ */
#togglePassword {
    border: 1px solid var(--color-border);
    border-left: none;
    background: var(--color-background);
    color: var(--color-text-muted);
    transition: all 0.3s;
}

#togglePassword:hover {
    background: var(--color-primary);
    color: var(--color-text-light);
}

/* ============================================
   REMEMBER ME & LINKS
   ============================================ */
.form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-check-label {
    color: var(--color-text-dark);
    font-size: 0.95rem;
}

a {
    color: var(--color-primary);
    transition: color 0.3s;
}

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

/* ============================================
   SUBMIT BUTTON
   ============================================ */
#loginBtn {
    background: var(--gradient-primary);
    border: none;
    padding: 0.85rem;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
}

#loginBtn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#loginBtn:active {
    transform: translateY(0);
}

#loginBtn:disabled {
    background: var(--color-text-muted);
    cursor: not-allowed;
}

/* ============================================
   LOADING STATE
   ============================================ */
#loginBtn.loading {
    position: relative;
    color: transparent;
}

#loginBtn.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid var(--color-text-light);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   DIVIDER
   ============================================ */
.text-center .text-muted {
    position: relative;
    padding: 0 1rem;
}

.text-center .text-muted::before,
.text-center .text-muted::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background: var(--color-border);
}

.text-center .text-muted::before {
    left: 0;
}

.text-center .text-muted::after {
    right: 0;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    border-radius: 10px;
    padding: 1rem 1.25rem;
}

.alert-success {
    background: var(--gradient-success);
    border: none;
    color: var(--color-success);
}

.alert-danger {
    background: linear-gradient(135deg, #ffe6e6, #ffcccc);
    border: none;
    color: var(--color-danger);
}

.alert-info {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border: none;
    color: var(--color-info);
}

/* ============================================
   MOBILE RESPONSIVENESS
   ============================================ */
@media (max-width: 576px) {
    .form-container {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .form-container h2 {
        font-size: 1.5rem;
    }
    
    .form-container img {
        height: 50px !important;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.form-control:focus-visible,
.form-check-input:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* ============================================
   INVALID FEEDBACK
   ============================================ */
.invalid-feedback {
    display: none;
    font-size: 0.875rem;
    color: var(--color-danger);
    margin-top: 0.25rem;
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* ============================================
   SECURITY BADGE
   ============================================ */
.text-center small {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-background);
    border-radius: 20px;
    color: var(--color-text-muted);
}