/* Login Page Styles */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-gradient-start: #667eea;
    --bg-gradient-end: #764ba2;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.login-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.login-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    min-height: 600px;
}

/* Left Side - Branding */
.login-left {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    padding: 60px 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-left::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.brand-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    text-align: center;
}

.brand-logo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.brand-logo i {
    font-size: 40px;
    color: var(--white);
}

.brand-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}

.brand-subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.brand-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 40px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-item:hover {
    transform: translateX(5px);
    background: rgba(255, 255, 255, 0.15);
}

.feature-item i {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

.feature-item span {
    font-size: 15px;
    font-weight: 500;
}

/* Right Side - Login Form */
.login-right {
    padding: 60px 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
}

.login-form-container {
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-light);
    font-size: 15px;
}

.messages-container {
    margin-bottom: 25px;
}

.alert {
    border-radius: 12px;
    padding: 14px 18px;
    border: none;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
}

.alert i {
    font-size: 18px;
    flex-shrink: 0;
}

.login-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 14px;
}

.form-label i {
    color: var(--primary-color);
    font-size: 14px;
}

.form-control {
    height: 50px;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--bg-light);
}

.form-control:focus {
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-light);
    opacity: 0.6;
}

.password-input-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

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

.password-toggle i {
    font-size: 18px;
}

.invalid-feedback {
    display: none;
    font-size: 13px;
    color: var(--danger-color);
    margin-top: 6px;
}

.form-control:invalid:not(:placeholder-shown) ~ .invalid-feedback {
    display: block;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.form-check {
    display: flex;
    align-items: center;
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    cursor: pointer;
    border: 2px solid var(--border-color);
    border-radius: 4px;
}

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

.form-check-label {
    font-size: 14px;
    color: var(--text-dark);
    cursor: pointer;
    user-select: none;
}

.forgot-password-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border: none;
    border-radius: 12px;
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
}

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

.btn-icon {
    transition: transform 0.3s ease;
}

.btn-login:hover .btn-icon {
    transform: translateX(3px);
}

.login-footer {
    margin-top: 30px;
    text-align: center;
}

.signup-link {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.signup-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 968px) {
    .login-wrapper {
        grid-template-columns: 1fr;
    }

    .login-left {
        display: none;
    }

    .login-right {
        padding: 40px 30px;
    }

    .brand-title {
        font-size: 28px;
    }
}

@media (max-width: 576px) {
    body {
        padding: 10px;
    }

    .login-wrapper {
        border-radius: 16px;
        min-height: auto;
    }

    .login-right {
        padding: 30px 20px;
    }

    .login-header h2 {
        font-size: 26px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .form-control {
        height: 48px;
        font-size: 14px;
    }

    .btn-login {
        height: 50px;
        font-size: 15px;
    }
}

/* Loading State */
.btn-login.loading {
    pointer-events: none;
    opacity: 0.7;
}

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

.btn-login.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Success Animation */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-form-container {
    animation: slideIn 0.5s ease-out;
}