/* ===== login.css ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 100%);
    color: #1a2332;
    min-height: 100vh;
}

.header {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    padding: 0.6rem 2rem;
    position: sticky;
    top: 12px;
    z-index: 100;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
    border-radius: 16px;
    margin: 12px auto;
    max-width: 1200px;
    width: 94%;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.logo span {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a2332;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #1a2332;
    padding: 0.2rem 0.5rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    color: #4a5a6e;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a2332;
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: #1a2332;
}

.nav-menu a:hover::after {
    width: 100%;
}

.login-container {
    width: 100%;
    max-width: 440px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.login-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 2.5rem 2rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: rgba(26, 35, 50, 0.04);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.login-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1a2332;
    letter-spacing: -0.5px;
}

.login-sub {
    color: #4a5a6e;
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #1a2332;
}

.form-group input {
    padding: 0.7rem 1rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    font-size: 0.95rem;
    color: #1a2332;
    transition: all 0.3s ease;
    outline: none;
    width: 100%;
}

.form-group input:focus {
    border-color: #1a2332;
    box-shadow: 0 0 0 3px rgba(26, 35, 50, 0.08);
    background: rgba(255, 255, 255, 0.95);
}

.form-group input::placeholder {
    color: #9aabbb;
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 3rem;
}

.toggle-password {
    position: absolute;
    right: 0.8rem;
    background: none;
    border: none;
    color: #6a7a8f;
    cursor: pointer;
    padding: 0.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.toggle-password:hover {
    color: #1a2332;
    background: rgba(0, 0, 0, 0.04);
}

.error-message {
    font-size: 0.75rem;
    color: #dc3545;
    min-height: 1.2rem;
    margin-top: 0.1rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    margin-top: -0.25rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #4a5a6e;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #1a2332;
    cursor: pointer;
}

.forgot-link {
    color: #4a5a6e;
    text-decoration: none;
    transition: color 0.2s ease;
}

.forgot-link:hover {
    color: #1a2332;
    text-decoration: underline;
}

.btn-primary {
    padding: 0.8rem;
    border-radius: 30px;
    border: none;
    background: #1a2332;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 0.25rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-primary:hover {
    background: #2c3e50;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 35, 50, 0.2);
}

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.login-footer {
    text-align: center;
    font-size: 0.85rem;
    color: #4a5a6e;
    margin-top: 0.25rem;
}

.login-footer a {
    color: #1a2332;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
    cursor: pointer;
}

.login-footer a:hover {
    text-decoration: underline;
    color: #2c3e50;
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 1.25rem;
    color: #9aabbb;
    font-size: 0.8rem;
}

.login-divider::before,
.login-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
}

.social-login {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 0.5rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    font-size: 0.85rem;
    font-weight: 500;
    color: #1a2332;
    cursor: pointer;
    transition: all 0.25s ease;
}

.social-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.social-btn.google:hover {
    border-color: #EA4335;
    color: #EA4335;
}

.social-btn.github:hover {
    border-color: #24292e;
    color: #24292e;
}

.social-btn svg {
    flex-shrink: 0;
}

.login-footer-text {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.7rem;
    color: #6a7a8f;
}

#registerPanel .login-header h1 {
    font-size: 1.4rem;
}

.footer {
    background: rgba(26, 35, 50, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: #a8b5c7;
    padding: 3rem 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-section h4 {
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #a8b5c7;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffffff;
}

.footer-bottom {
    background: rgba(20, 28, 43, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-bottom-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-info {
    font-size: 0.75rem;
    color: #6a7a8f;
}

@media (max-width: 768px) {
    .header {
        padding: 0.5rem 1rem;
        border-radius: 12px;
        width: 96%;
        top: 8px;
    }

    .menu-toggle {
        display: block;
        font-size: 1.6rem;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 0.8rem;
        border-radius: 12px;
        margin-top: 0.5rem;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
        gap: 0.3rem;
        z-index: 50;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 0.7rem 1rem;
        border-radius: 8px;
        font-size: 1rem;
        text-align: center;
    }

    .nav-menu a::after {
        display: none;
    }

    .login-container {
        margin: 1rem auto;
    }

    .login-card {
        padding: 1.8rem 1.2rem 1.5rem;
        border-radius: 20px;
    }

    .login-header h1 {
        font-size: 1.3rem;
    }

    .logo-icon {
        width: 52px;
        height: 52px;
        padding: 10px;
    }

    .form-group input {
        padding: 0.6rem 0.9rem;
        font-size: 0.9rem;
    }

    .social-login {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }

    .social-btn {
        padding: 0.55rem 0.5rem;
        font-size: 0.8rem;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.4rem;
    }

    .login-divider {
        margin: 1.2rem 0 1rem;
    }

    .btn-primary {
        padding: 0.7rem;
        font-size: 0.95rem;
    }

    #registerPanel .login-header h1 {
        font-size: 1.2rem;
    }

    .footer {
        padding: 2rem 1rem 0;
    }
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
        padding-bottom: 1.5rem;
    }
    .footer-section h4 {
        font-size: 0.85rem;
        margin-bottom: 0.6rem;
    }
    .footer-section ul li a {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.4rem 0.7rem;
        border-radius: 10px;
        width: 96%;
        top: 6px;
    }
    .logo span {
        font-size: 0.85rem;
    }
    .logo img {
        width: 24px;
        height: 24px;
    }
    .menu-toggle {
        font-size: 1.4rem;
        padding: 0.1rem 0.3rem;
    }

    .login-card {
        padding: 1.2rem 0.8rem 1.2rem;
    }

    .login-header h1 {
        font-size: 1.1rem;
    }

    .login-sub {
        font-size: 0.8rem;
    }

    .form-group label {
        font-size: 0.75rem;
    }

    .form-group input {
        font-size: 0.8rem;
        padding: 0.5rem 0.7rem;
    }

    #registerPanel .login-header h1 {
        font-size: 1rem;
    }

    .footer {
        padding: 1.5rem 0.8rem 0;
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
        padding-bottom: 1rem;
    }
    .footer-section h4 {
        font-size: 0.75rem;
        margin-bottom: 0.4rem;
    }
    .footer-section ul li {
        margin-bottom: 0.3rem;
    }
    .footer-section ul li a {
        font-size: 0.7rem;
    }
    .footer-info {
        font-size: 0.6rem;
    }
    .footer-bottom {
        padding: 0.6rem 0;
    }
    .footer-bottom-content {
        padding: 0 0.8rem;
    }
}