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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #0A0A0A;
    color: #FFFFFF;
    overflow-x: hidden;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Auth Container */
.auth-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

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

.auth-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 6px;
    margin-bottom: 40px;
    border: 1px solid rgba(245, 208, 111, 0.1);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.tab-btn:hover {
    color: #F5D06F;
    background: rgba(245, 208, 111, 0.05);
}

.tab-btn.active {
    background: linear-gradient(90deg, #F5D06F 0%, #C89B3C 100%);
    color: #0A0A0A;
    box-shadow: 0 0 20px rgba(245, 208, 111, 0.3);
}

.auth-logo {
    display: flex;
    justify-content: center;
}

.logo-image {
    height: 60px;
    width: auto;
    border-radius: 8px;
    filter: drop-shadow(0 0 20px rgba(245, 208, 111, 0.3));
    transition: all 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(245, 208, 111, 0.5);
}

/* Auth Card */
.auth-card {
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 50px;
    border: 1px solid rgba(245, 208, 111, 0.15);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(245, 208, 111, 0.05) inset;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #F5D06F, transparent);
    opacity: 0.3;
}

.auth-form {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
    transition: all 0.4s ease;
    display: none;
}

.auth-form.active {
    opacity: 1;
    transform: translateY(0) scale(1);
    display: block;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.form-group input {
    width: 100%;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #FFFFFF;
    font-size: 15px;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(245, 208, 111, 0.4);
    box-shadow: 0 0 20px rgba(245, 208, 111, 0.1);
}

.form-group input.error {
    border-color: rgba(255, 100, 100, 0.5);
    background: rgba(255, 70, 70, 0.05);
}

.error-msg {
    display: block;
    color: rgba(255, 100, 100, 0.8);
    font-size: 12px;
    margin-top: 6px;
    height: 16px;
    opacity: 0;
    transition: opacity 0.3s ease;
    font-weight: 500;
}

.error-msg.show {
    opacity: 1;
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 16px 30px;
    background: linear-gradient(90deg, #F5D06F 0%, #C89B3C 100%);
    color: #0A0A0A;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    margin-top: 10px;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #F5D06F 0%, #C89B3C 100%);
    filter: blur(20px);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 0 30px rgba(245, 208, 111, 0.5);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.toggle-link {
    color: #F5D06F;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.toggle-link:hover {
    color: #C89B3C;
    text-shadow: 0 0 10px rgba(245, 208, 111, 0.3);
}

/* Success Message */
.success-msg {
    text-align: center;
    padding: 12px 20px;
    background: rgba(100, 255, 100, 0.1);
    border: 1px solid rgba(100, 255, 100, 0.2);
    border-radius: 12px;
    color: #64ff64;
    font-size: 14px;
    margin-top: 20px;
    display: none;
    animation: fadeIn 0.3s ease;
}

.success-msg.show {
    display: block;
}

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

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 15px;
        align-items: flex-start;
        padding-top: 40px;
    }

    .auth-container {
        max-width: 100%;
    }

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

    .auth-logo .logo-image {
        height: 50px;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .form-group input {
        padding: 12px 16px;
        font-size: 14px;
    }

    .btn-primary {
        padding: 14px 24px;
        font-size: 15px;
    }
}