/* =========================================
   Authentication Styles (Vibe Theme)
   ========================================= */

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-hover: #1a1a1a;
    --border-primary: #222222;
    --border-accent: #333333;
    --green-primary: #00ff00;
    --green-secondary: #00cc6a;
    --green-dark: #009951;
    --green-glow: rgba(0, 255, 136, 0.2);
    --green-subtle: rgba(0, 255, 136, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --text-accent: #666666;
    --gradient-green: linear-gradient(135deg, var(--green-primary) 0%, var(--green-secondary) 100%);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 16px rgba(0, 255, 136, 0.1);
}

body.auth-body {
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    font-family: 'Inter', sans-serif;
}

/* Background Effects */
.login-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: -2;
}

/* Background Logo Watermark */
.background-logo {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vh;
    background-image: url('/image/conspicuous_bg.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.03;
    z-index: -1;
    pointer-events: none;
    will-change: transform;
}

/* Login Container */
.login-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
    z-index: 1;
}

/* Back to Home Button */
.back-to-home {
    position: absolute;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease, transform 0.3s ease;
    z-index: 10;
}

.back-to-home:hover {
    color: var(--green-primary);
    transform: translateX(-50%) translateX(-2px);
}

.back-to-home i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.back-to-home:hover i {
    transform: translateX(-2px);
}

/* Login Card */
.login-card {
    background: rgba(17, 17, 17, 0.95);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 8px;
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-top: 4rem;
    transform: translateZ(0);
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.02) 0%,
            rgba(0, 255, 136, 0.02) 50%,
            rgba(255, 255, 255, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.login-card:hover::before {
    opacity: 1;
}

.login-card:hover {
    background: rgba(26, 26, 26, 0.95);
    border: 1px solid rgba(0, 255, 136, 0.4);
    transform: translateY(-5px) translateZ(0);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(255, 255, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        0 0 40px rgba(0, 255, 136, 0.15);
}

/* Brand Header */
.brand-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    z-index: 2;
}

.brand-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--gradient-green);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 400;
}

/* Form Styles */
.login-form {
    position: relative;
    z-index: 2;
}

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

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    display: block;
}

.glass-input {
    background: rgba(0, 0, 0, 0.6) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 6px !important;
    color: var(--text-primary) !important;
    padding: 0.875rem 1rem !important;
    font-size: 0.95rem !important;
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
    width: 100%;
}

.glass-input:focus {
    background: rgba(0, 0, 0, 0.8) !important;
    border-color: var(--green-primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(0, 255, 136, 0.25) !important;
    color: var(--text-primary) !important;
    outline: none !important;
}

.glass-input::placeholder {
    color: var(--text-accent) !important;
}

.input-icon,
.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-accent);
    transition: color 0.3s ease;
    cursor: pointer;
    z-index: 3;
}

.glass-input:focus+.input-icon,
.password-toggle:hover {
    color: var(--green-primary);
}

.error-message {
    color: #ff4757;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: none;
}

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

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

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    width: 18px;
    height: 18px;
}

.form-check-input:checked {
    background: var(--gradient-green);
    border-color: var(--green-primary);
}

.form-check-label {
    color: var(--text-secondary);
    margin: 0;
}

.forgot-link {
    color: var(--green-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-link:hover {
    color: var(--green-secondary);
}

/* Login Button */
.login-btn {
    background: var(--gradient-green) !important;
    border: none !important;
    color: var(--bg-primary) !important;
    padding: 0.875rem 2rem !important;
    font-weight: 600 !important;
    border-radius: 6px !important;
    font-size: 0.95rem !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease !important;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.4) !important;
    color: var(--bg-primary) !important;
}

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

/* Loading */
.loading {
    display: none;
    text-align: center;
    color: var(--green-primary);
    margin-top: 1rem;
}

.loading.active {
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .login-card {
        padding: 2rem 1.5rem;
        margin: 1rem;
        margin-top: 5rem;
    }

    .back-to-home {
        top: 1.5rem;
        font-size: 0.85rem;
    }

    .background-logo {
        width: 90vw;
        height: 70vh;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem 1rem;
        margin-top: 4rem;
    }

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

    .back-to-home {
        top: 1rem;
        font-size: 0.8rem;
    }

    .background-logo {
        width: 95vw;
        height: 60vh;
    }
}