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

body {
    font-family: 'shabnam', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    position: relative;
    overflow: hidden;
}

/* Animated Background Elements */
.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

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

.shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 20%;
    right: 10%;
    animation-delay: 2s;
}

.shape:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 10%;
    left: 15%;
    animation-delay: 4s;
}

.shape:nth-child(4) {
    width: 100px;
    height: 100px;
    bottom: 20%;
    right: 15%;
    animation-delay: 1s;
}

.shape:nth-child(5) {
    width: 40px;
    height: 40px;
    top: 60%;
    left: 50%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.7; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}

.login-container {
    position: relative;
    z-index: 10;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 3rem 2rem;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    width: 100%;
    max-width: 420px;
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1rem;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.welcome-text h1 {
    color: #333;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.welcome-text p {
    color: #666;
    font-size: 1rem;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
    font-size: 0.95rem;
}

.input-container {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 1rem 3rem 1rem 3rem;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #667eea;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.form-input:focus + .input-icon {
    color: #5a67d8;
    transform: translateY(-50%) scale(1.1);
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.password-toggle:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #667eea;
    cursor: pointer;
}

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

.forgot-password:hover {
    color: #5a67d8;
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.login-btn:hover::before {
    left: 100%;
}

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

.divider {
    display: flex;
    align-items: center;
    margin: 2rem 0;
    color: #999;
    font-size: 0.9rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e1e8ed;
}

.divider span {
    padding: 0 1rem;
    background: rgba(255, 255, 255, 0.95);
}

.social-login {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-btn {
    padding: 0.75rem;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
    color: #333;
}

.social-btn:hover {
    border-color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.google-btn:hover {
    border-color: #db4437;
    color: #db4437;
}

.github-btn:hover {
    border-color: #333;
    color: #333;
}

.footer-links {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

.footer-links a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Alert Messages */
.alert {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid;
    display: none;
}

.alert.show {
    display: block;
    animation: alertSlide 0.3s ease-out;
}

@keyframes alertSlide {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-success {
    background: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-info {
    background: #cce7ff;
    border-color: #b3d7ff;
    color: #004085;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-left: 0.5rem;
}

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

/* Responsive Design */
@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
        margin: 1rem;
        border-radius: 20px;
    }

    .welcome-text h1 {
        font-size: 1.5rem;
    }

    .social-login {
        grid-template-columns: 1fr;
    }

    .form-options {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .login-container {
        background: rgba(30, 30, 30, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .welcome-text h1 {
        color: #fff;
    }

    .welcome-text p {
        color: #ccc;
    }

    .form-group label {
        color: #fff;
    }

    .form-input {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: #fff;
    }

    .form-input::placeholder {
        color: #aaa;
    }

    .social-btn {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: #fff;
    }

    .divider span {
        background: rgba(30, 30, 30, 0.95);
    }
}