:root {
    --primary: #6c5ce7;
    --primary-dark: #5649c0;
    --secondary: #00cec9;
    --accent: #fd79a8;
    --light: #f8f9fa;
    --dark: #2d3436;
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #d63031;
    --gray: #636e72;
    --light-gray: #dfe6e9;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    text-decoration: none;
}

body {
    background-color: #f5f6fa;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styles */
.app-header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
    z-index: 101;
}

.logo-icon {
    margin-right: 10px;
    font-size: 1.4rem;
}

/* Mobile Menu Button */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
    z-index: 101;
    transition: var(--transition);
}

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

/* Navigation Links */
.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
    transition: var(--transition);
}

.nav-links a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.auth-buttons {
    display: flex;
    gap: 15px;
    margin-left: 20px;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: rgba(108, 92, 231, 0.1);
}

/* Login Form */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: 40px 5%;
}

.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 500px;
    padding: 40px;
    text-align: center;
}

.login-header {
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--dark);
}

.login-header p {
    color: var(--gray);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

.forgot-password {
    display: block;
    text-align: right;
    margin-top: -15px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.forgot-password a {
    color: var(--primary);
    text-decoration: none;
}

.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me input {
    margin-right: 10px;
}

.remember-me label {
    font-size: 0.9rem;
    color: var(--gray);
}

.register-link {
    margin-top: 20px;
    color: var(--gray);
    font-size: 0.9rem;
}

.register-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

/* Social Login */
.social-login {
    margin: 30px 0;
    position: relative;
}

.social-login::before,
.social-login::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background: var(--light-gray);
}

.social-login::before {
    left: 0;
}

.social-login::after {
    right: 0;
}

.social-login span {
    background: white;
    padding: 0 15px;
    position: relative;
    z-index: 1;
    color: var(--gray);
    font-size: 0.9rem;
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.social-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--light-gray);
    background: white;
    color: var(--dark);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.social-btn:hover {
    background: #f5f5f5;
    transform: translateY(-2px);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 30px 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 100;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        padding: 12px 0;
        font-size: 1.1rem;
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .auth-buttons {
        flex-direction: column;
        margin-left: 0;
        width: 100%;
        margin-top: 20px;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

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

    .login-header h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 20px 15px;
    }

    .social-buttons {
        gap: 10px;
    }
}