/**
 * LRN Login Page Styles
 * Beautiful, animated login page with theme support
 */

/* ==========================================================================
   LOGIN CONTAINER & BACKGROUND
   ========================================================================== */

.login-container {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--lrn-spacing-xl) var(--lrn-spacing-md);
    background: transparent;
    transition: background var(--lrn-transition-base);
}

/* Light theme login container - transparent to show animated background */
[data-theme="light"] .login-container {
    background: transparent;
}

/* Animated background waves */
/* .login-background styles are now handled by lrn-framework.css for universal consistency */

.login-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        rgba(74, 158, 255, 0.05) 0%,
        transparent 25%,
        transparent 75%,
        rgba(107, 176, 255, 0.03) 100%
    );
    animation: lrn-gradient-shift 8s ease-in-out infinite;
}

@keyframes lrn-gradient-shift {
    0%, 100% {
        background: linear-gradient(
            45deg,
            rgba(74, 158, 255, 0.05) 0%,
            transparent 25%,
            transparent 75%,
            rgba(107, 176, 255, 0.03) 100%
        );
    }
    50% {
        background: linear-gradient(
            45deg,
            rgba(107, 176, 255, 0.03) 0%,
            transparent 25%,
            transparent 75%,
            rgba(90, 108, 240, 0.05) 100%
        );
    }
}

/* Wave animations are now handled by lrn-framework.css for universal consistency */

/* Container positioning */
.login-container .container {
    position: relative;
    z-index: 2;
    background: transparent !important;
    min-height: auto !important;
}

/* ==========================================================================
   LOGIN CARD
   ========================================================================== */

.login-card {
    background: rgba(30, 30, 46, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--lrn-spacing-xl);
    box-shadow: var(--lrn-shadow-lg), 
                0 0 0 1px rgba(255, 255, 255, 0.1);
    padding: 3.5rem;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--lrn-transition-base);
    animation: lrn-fade-in-up 0.8s ease-out;
}

/* Light theme login card */
[data-theme="light"] .login-card {
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--lrn-shadow-lg), 
                0 0 0 1px rgba(255, 255, 255, 0.2);
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15), 
                0 0 0 1px rgba(255, 255, 255, 0.3);
}

@keyframes lrn-fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ==========================================================================
   LOGIN HEADER
   ========================================================================== */

.login-header {
    text-align: center;
    margin-bottom: var(--lrn-spacing-lg);
}

.logo-container {
    margin-bottom: var(--lrn-spacing-md);
    text-align: center;
}

.logo-container .logo {
    max-width: 400px;
    max-height: 240px;
    width: auto;
    height: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: all var(--lrn-transition-base);
}

.logo-container .logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
}

/* Legacy logo circle styles for backward compatibility */
.logo-circle {
    width: 80px;
    height: 80px;
    background: var(--lrn-gradient-primary);
    border-radius: var(--lrn-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(74, 158, 255, 0.3);
    animation: lrn-pulse 2s infinite;
    transition: all var(--lrn-transition-base);
}

.logo-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(74, 158, 255, 0.4);
}

.logo-circle .icon {
    font-size: 2rem;
    color: white;
    font-weight: bold;
}

@keyframes lrn-pulse {
    0%, 100% { 
        transform: scale(1); 
        box-shadow: 0 10px 30px rgba(74, 158, 255, 0.3);
    }
    50% { 
        transform: scale(1.02); 
        box-shadow: 0 15px 35px rgba(74, 158, 255, 0.4);
    }
}

.login-title {
    font-size: 2rem;
    font-weight: var(--lrn-font-weight-bold);
    color: #ffffff;
    margin-bottom: var(--lrn-spacing-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

@keyframes lrn-gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.login-subtitle {
    font-size: 1.1rem;
    color: #b8bcc8;
    font-weight: var(--lrn-font-weight-normal);
    margin-bottom: var(--lrn-spacing-md);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.divider {
    width: 60px;
    height: 3px;
    background: var(--lrn-gradient-primary);
    margin: 0 auto;
    border-radius: var(--lrn-radius-sm);
    animation: lrn-expand 1s ease-out 0.5s both;
}

@keyframes lrn-expand {
    from { width: 0; }
    to { width: 60px; }
}

/* ==========================================================================
   LOGIN FORM
   ========================================================================== */

.login-form {
    animation: lrn-fade-in 1s ease-out 0.3s both;
}

@keyframes lrn-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.login-form .form-group {
    margin-bottom: var(--lrn-spacing-xl);
    position: relative;
}

.login-form .form-label {
    font-weight: var(--lrn-font-weight-semibold);
    color: #f0f0f5;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: var(--lrn-spacing-sm);
    margin-bottom: var(--lrn-spacing-md);
    transition: color var(--lrn-transition-base);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.login-form .form-label .icon {
    color: var(--lrn-primary);
    font-size: 0.9rem;
}

.input-wrapper {
    position: relative;
}

.login-form .form-control {
    padding: 1rem 1.25rem;
    font-size: 1rem;
    color: #2c3e50 !important; /* Dark text for readability */
    background-color: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--lrn-radius-lg);
    transition: all var(--lrn-transition-base);
    backdrop-filter: blur(10px);
}

.login-form .form-control:focus {
    color: #2c3e50 !important; /* Ensure dark text on focus too */
    background-color: rgba(255, 255, 255, 0.95);
    border-color: transparent;
    box-shadow: 0 10px 25px rgba(74, 144, 226, 0.15);
    transform: translateY(-2px);
}

.login-form .form-control::selection {
    background: #4a90e2;
    color: #ffffff;
}

.login-form .form-control::-moz-selection {
    background: #4a90e2;
    color: #ffffff;
}

.login-form .form-control::placeholder {
    color: rgba(108, 117, 125, 0.7);
    transition: opacity var(--lrn-transition-base);
}

.login-form .form-control:focus::placeholder {
    opacity: 0.5;
}

/* Ensure text is readable even with browser autofill */
.login-form .form-control:-webkit-autofill,
.login-form .form-control:-webkit-autofill:hover,
.login-form .form-control:-webkit-autofill:focus {
    -webkit-text-fill-color: #2c3e50 !important;
    -webkit-box-shadow: 0 0 0px 1000px rgba(255, 255, 255, 0.8) inset !important;
    transition: background-color 5000s ease-in-out 0s;
}

/* Input focus border animation */
.input-focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--lrn-gradient-primary);
    border-radius: var(--lrn-radius-sm);
    transition: width var(--lrn-transition-base);
}

.form-control:focus + .input-focus-border,
.password-input-container .form-control:focus ~ .input-focus-border {
    width: 100%;
}

/* Password toggle */
.login-form .password-toggle {
    right: 1rem;
    color: var(--lrn-text-muted);
    padding: var(--lrn-spacing-sm);
    border-radius: var(--lrn-radius-sm);
    transition: all var(--lrn-transition-fast);
}

.login-form .password-toggle:hover {
    color: var(--lrn-primary);
    background-color: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .login-form .password-toggle:hover {
    background-color: rgba(124, 142, 247, 0.1);
}

/* ==========================================================================
   LOGIN BUTTON
   ========================================================================== */

.btn-login {
    background: var(--lrn-gradient-primary);
    border: none;
    border-radius: var(--lrn-radius-lg);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: var(--lrn-font-weight-semibold);
    color: white;
    width: 100%;
    margin-bottom: var(--lrn-spacing-lg);
    box-shadow: 0 10px 25px rgba(74, 158, 255, 0.3);
    transition: all var(--lrn-transition-base);
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(74, 158, 255, 0.4);
    filter: brightness(1.1);
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px rgba(74, 158, 255, 0.3);
}

.btn-login:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.3);
}

.btn-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lrn-spacing-md);
    transition: opacity var(--lrn-transition-base);
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--lrn-transition-base);
}

.btn-login.loading .btn-text {
    opacity: 0;
}

.btn-login.loading .btn-loader {
    opacity: 1;
}

.btn-loader .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: var(--lrn-radius-circle);
    animation: lrn-spin 1s linear infinite;
}

/* ==========================================================================
   LOGIN FOOTER
   ========================================================================== */

.login-footer {
    margin-top: var(--lrn-spacing-xxl);
    text-align: center;
    animation: lrn-fade-in 1s ease-out 0.6s both;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lrn-spacing-lg);
    margin-bottom: var(--lrn-spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--lrn-primary);
    text-decoration: none;
    font-weight: var(--lrn-font-weight-medium);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--lrn-spacing-sm);
    padding: var(--lrn-spacing-sm) var(--lrn-spacing-md);
    border-radius: var(--lrn-radius-md);
    transition: all var(--lrn-transition-fast);
}

[data-theme="dark"] .footer-link {
    color: var(--lrn-primary-light);
}

.footer-link:hover {
    color: var(--lrn-primary-dark);
    background: rgba(102, 126, 234, 0.1);
    text-decoration: none;
    transform: translateY(-1px);
}

[data-theme="dark"] .footer-link:hover {
    background: rgba(124, 142, 247, 0.1);
}

.footer-separator {
    color: var(--lrn-border-color);
    font-weight: var(--lrn-font-weight-light);
}

.footer-info {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: var(--lrn-spacing-lg);
}

[data-theme="dark"] .footer-info {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.security-notice {
    color: #b8bcc8;
    font-size: 0.85rem;
    margin-bottom: var(--lrn-spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lrn-spacing-sm);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.security-notice .icon {
    color: var(--lrn-success);
}

.version-info {
    color: #8b8fa3;
    font-size: 0.8rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lrn-spacing-sm);
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: var(--lrn-radius-circle);
    display: inline-block;
}

.status-indicator.online {
    background: var(--lrn-success);
    box-shadow: 0 0 6px rgba(40, 167, 69, 0.5);
    animation: lrn-pulse-green 2s infinite;
}

@keyframes lrn-pulse-green {
    0%, 100% { 
        opacity: 1; 
        box-shadow: 0 0 6px rgba(40, 167, 69, 0.5);
    }
    50% { 
        opacity: 0.7; 
        box-shadow: 0 0 10px rgba(40, 167, 69, 0.7);
    }
}

/* Features section removed - keeping login focused */

/* Theme toggle removed - single theme design */

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 576px) {
    .login-card {
        padding: 2.5rem;
        margin: var(--lrn-spacing-md);
        max-width: 100%;
    }
    
    .login-title {
        font-size: 1.75rem;
    }
    
    .logo-container .logo {
        max-width: 320px;
        max-height: 190px;
    }
    
    .logo-circle {
        width: 70px;
        height: 70px;
    }
    
    .logo-circle .icon {
        font-size: 1.75rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--lrn-spacing-md);
    }
    
    .footer-separator {
        display: none;
    }
    
    .theme-toggle {
        top: var(--lrn-spacing-md);
        right: var(--lrn-spacing-md);
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 768px) {
    .features-section .row {
        flex-direction: column;
    }
    
    .feature-item {
        margin-bottom: var(--lrn-spacing-md);
    }
}

/* ==========================================================================
   ACCESSIBILITY & REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .wave {
        animation: none;
    }
    
    .logo-circle {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .login-card {
        border: 2px solid var(--lrn-body-color);
    }
    
    .form-control {
        border: 2px solid var(--lrn-body-color);
    }
    
    .btn-login {
        border: 2px solid var(--lrn-body-color);
    }
}