:root {
    --base: #0B0F1A;
    --base-light: #1E293B;
    --primary: #3B82F6;
    --primary-dark: #1D4ED8;
    --primary-light: #60A5FA;
    --accent: #6366F1;
    --accent-dark: #4F46E5;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --text: #F1F5F9;
    --text2: #94A3B8;
    --text3: #64748B;
    --border: #334155;
    --border-light: #475569;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(51, 65, 85, 0.5);
    --glow-primary: rgba(59, 130, 246, 0.15);
    --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #6366F1 100%);
    --gradient-bg: radial-gradient(ellipse 80% 50% at 50% -30%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--base);
    background-image: var(--gradient-bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

.bg {
    position: fixed;
    inset: 0;
    z-index: -2;
}

.particles {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.2;
    animation: pulse 5s ease-in-out infinite;
}

.particle:nth-child(1) { left: 20%; top: 25%; animation-delay: 0s; }
.particle:nth-child(2) { left: 50%; top: 60%; animation-delay: 1.5s; width: 2px; height: 2px; }
.particle:nth-child(3) { left: 70%; top: 30%; animation-delay: 2.5s; width: 4px; height: 4px; }

.login-card {
    width: 100%;
    max-width: 460px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 40px 36px;
    position: relative;
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.5s ease;
}

.deco-ring {
    position: absolute;
    width: 160px;
    height: 160px;
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

.deco-ring:nth-child(1) {
    top: -60px;
    left: -60px;
    animation: pulse 5s ease-in-out infinite;
}

.deco-ring:nth-child(2) {
    bottom: -40px;
    right: -40px;
    width: 110px;
    height: 110px;
    animation: pulse 5s ease-in-out infinite 2.5s;
}

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo-icon img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    margin-bottom: 16px;
    object-fit: cover;
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.2);
}

.logo h1 {
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text);
}

.logo h1 span {
    color: var(--primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.error-msg {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
    color: var(--danger);
    margin-bottom: 22px;
    font-size: 0.875rem;
    font-weight: 500;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text2);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-input {
    padding: 14px 16px;
    background: var(--base);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--glow-primary);
}

.form-input::placeholder {
    color: var(--text3);
}

.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 15px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 10px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.35);
    background: linear-gradient(135deg, #2563eb 0%, #4F46E5 100%);
}

.login-footer {
    text-align: center;
    margin-top: 26px;
    font-size: 0.78rem;
    color: var(--text3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-footer::before,
.login-footer::after {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--border);
}

.ver {
    position: absolute;
    bottom: 18px;
    right: 22px;
    font-size: 0.68rem;
    color: var(--text3);
    opacity: 0.5;
    font-weight: 600;
    letter-spacing: 0.05em;
}

@media (max-width: 480px) {
    .login-card {
        margin: 16px;
        padding: 32px 24px;
    }
    
    .logo-icon img {
        width: 64px;
        height: 64px;
    }
}
/* Enhanced Mobile Responsive */
@media (max-width: 768px) {
    body {
        -webkit-overflow-scrolling: touch;
        padding: 12px;
        display: block;
    }
    
    .login-card {
        max-width: 100%;
        margin: 12px;
        padding: 24px 20px;
        border-radius: 14px;
    }
    
    .deco-ring {
        display: none;
    }
    
    .logo {
        margin-bottom: 24px;
    }
    
    .logo-icon img {
        width: 56px;
        height: 56px;
    }
    
    .logo h1 {
        font-size: 1.4rem;
    }
    
    .error-msg {
        padding: 10px;
        font-size: 0.8rem;
    }
    
    .form-input {
        padding: 12px 14px;
        font-size: 16px;
    }
    
    .submit-btn {
        padding: 14px;
        min-height: 48px;
    }
    
    .particles, .bg {
        display: none;
    }
}

@media (hover: none) and (pointer: coarse) {
    .submit-btn:hover { transform: none; }
    .submit-btn, .form-input { min-height: 44px; }
}