/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
}

/* Background Shapes */
.background-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* Login Container */
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

/* Login Card */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px 35px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
}

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.login-header h1 {
    color: #2d3748;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-header p {
    color: #718096;
    font-size: 16px;
    font-weight: 500;
}

/* Form Styles */
.login-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    color: #4a5568;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    gap: 8px;
}

.form-group label i {
    color: #667eea;
    width: 16px;
}

.form-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f8fafc;
    color: #2d3748;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: #a0aec0;
}

.error-message {
    display: none;
    color: #e53e3e;
    font-size: 12px;
    margin-top: 5px;
    font-weight: 500;
}

.error-message.show {
    display: block;
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 10px;
}

.remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #4a5568;
    font-weight: 500;
}

.remember-me input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 4px;
    margin-right: 8px;
    position: relative;
    transition: all 0.3s ease;
}

.remember-me input[type="checkbox"]:checked + .checkmark {
    background: #667eea;
    border-color: #667eea;
}

.remember-me input[type="checkbox"]:checked + .checkmark::after {
    content: '\2713';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.forgot-password {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

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

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.login-btn.loading .loading-spinner {
    display: block;
}

.login-btn.loading span {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Login Status */
.login-status {
    margin-top: 15px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    display: none;
}

.login-status.success {
    background: #f0fff4;
    color: #22543d;
    border: 1px solid #9ae6b4;
    display: block;
}

.login-status.error {
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #feb2b2;
    display: block;
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer p {
    color: #a0aec0;
    font-size: 12px;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-container {
        padding: 15px;
    }
    
    .login-card {
        padding: 30px 25px;
    }
    
    .login-header h1 {
        font-size: 22px;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .form-group input {
        padding: 12px 16px;
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

@media (max-width: 360px) {
    .login-card {
        padding: 25px 20px;
    }
    
    .logo {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .login-header h1 {
        font-size: 20px;
    }
}

/* Animation for form elements */
.form-group {
    animation: slideInUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }
.form-group:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus states for accessibility */
.form-group input:focus,
.login-btn:focus,
.remember-me:focus-within,
.forgot-password:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .login-card {
        background: white;
        border: 2px solid #000;
    }
    
    .form-group input {
        border: 2px solid #000;
        background: white;
    }
    
    .login-btn {
        background: #000;
        color: white;
    }
}