@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;900&display=swap');

/* ==== Nebula Auth Variables ==== */
:root {
    --nebula-bg: #0a0a0a;
    --nebula-primary: #7C3AED;
    --nebula-secondary: #06B6D4;
    --nebula-accent: #F472B6;
    --nebula-glow: rgba(124, 58, 237, 0.6);
    --nebula-text: #e0e0e0;
    --nebula-gray: #9ca3af;
    --nebula-card-bg: rgba(15, 15, 35, 0.8);
    --nebula-border: rgba(124, 58, 237, 0.4);
    --nebula-success: #10B981;
}

body.nebula-auth-body {
    background:
        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
        linear-gradient(to bottom, #0a0a0a, #050510);
    color: var(--nebula-text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

/* Container و Card */
.auth-container {
    position: relative;
    width: 100%;
    max-width: 450px;
    padding: 2rem;
    z-index: 10;
}

.auth-card {
    background: var(--nebula-card-bg);
    border: 1px solid var(--nebula-border);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 0 40px var(--nebula-glow);
    backdrop-filter: blur(15px);
    position: relative;
    z-index: 20;
}

.auth-logo {
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--nebula-primary), var(--nebula-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px var(--nebula-glow));
}

.auth-title {
    color: var(--nebula-text);
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 700;
    font-size: 1.5rem;
}

/* Input Fields */
.input-group {
    margin-bottom: 1.5rem;
}

.input-field {
    width: 100%;
    padding: 14px 16px;
    background: rgba(20, 15, 45, 0.6);
    border: 1px solid var(--nebula-border);
    border-radius: 10px;
    color: var(--nebula-text);
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-field::placeholder {
    color: var(--nebula-gray);
}

.input-field:focus {
    outline: none;
    border-color: var(--nebula-primary);
    box-shadow: 0 0 15px var(--nebula-glow);
}

/* Input Error Messages */
.input-error-message {
    color: var(--nebula-secondary);
    font-size: 0.85rem;
    margin-top: 0.2rem;
    display: block;
}

/* Buttons */
.btn-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--nebula-primary), var(--nebula-secondary));
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px var(--nebula-glow);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(124, 58, 237, 0.6);
}

/* Links */
.auth-link {
    color: var(--nebula-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.auth-link:hover {
    color: var(--nebula-accent);
    text-shadow: 0 0 10px var(--nebula-glow);
}

/* Separator */
.separator {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--nebula-secondary), transparent);
    margin: 1.5rem 0;
}

/* Remember Me */
.remember-me {
    color: var(--nebula-gray);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.remember-me input[type="checkbox"] {
    margin-left: 8px;
    accent-color: var(--nebula-primary);
}

/* Nebula Particles Effect */
.nebula-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--nebula-secondary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--nebula-glow);
    animation: float-particle 10s infinite ease-in-out;
}

.particle:nth-child(odd) {
    background: var(--nebula-primary);
    animation-delay: -3s;
}

@keyframes float-particle {
    0%, 100% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% {
        transform: translateY(-100vh) translateX(80px);
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 576px) {
    .auth-container {
        padding: 1rem;
    }
    .auth-card {
        padding: 1.5rem;
    }
    .auth-logo {
        font-size: 2rem;
    }
}