* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a24 50%, #252530 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.login-container {
    position: relative;
    z-index: 1;
    max-width: 450px;
    width: 100%;
    padding: 0 1rem;
}

.login-card {
    background: rgba(26, 26, 36, 0.85);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1.5rem;
    padding: 3rem 2.5rem;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.logo-container {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

.logo-container i {
    font-size: 2.5rem;
    color: white;
}

h2 {
    color: #f8fafc;
    font-weight: 800;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    color: #94a3b8;
    font-size: 0.9375rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    color: #cbd5e1;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: block;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #64748b;
    z-index: 2;
}

.form-control {
    background: rgba(30, 41, 59, 0.6);
    border: 2px solid rgba(71, 85, 105, 0.3);
    border-radius: 1rem;
    padding: 0.875rem 1rem 0.875rem 3rem;
    color: #f8fafc;
    font-size: 0.9375rem;
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-control:focus {
    background: rgba(30, 41, 59, 0.9);
    border-color: #6366f1;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    outline: none;
    color: #f8fafc;
}

.form-control::placeholder {
    color: #64748b;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    padding: 0;
    z-index: 2;
    transition: color 0.3s;
}

.toggle-password:hover {
    color: #cbd5e1;
}

.btn-login {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 1rem;
    padding: 1rem;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 0.5rem;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.5s, height 0.5s;
}

.btn-login:hover::before {
    width: 300px;
    height: 300px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 20px rgba(102, 126, 234, 0.4);
}

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-login span {
    position: relative;
    z-index: 1;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.divider {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 1.5rem 0;
}

.security-notice {
    text-align: center;
    color: #64748b;
    font-size: 0.8125rem;
}

.footer-text {
    text-align: center;
    color: #64748b;
    font-size: 0.8125rem;
    margin-top: 1.5rem;
}

.alert {
    border-radius: 1rem;
    border: none;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

@media (max-width: 576px) {
    .login-card {
        padding: 2rem 1.5rem;
    }

    .logo-container {
        width: 64px;
        height: 64px;
    }

    .logo-container i {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}