:root {
    --stone-50: #FAFAF9;
    --stone-100: #F5F5F4;
    --stone-200: #E7E5E4;
    --stone-300: #D6D3D1;
    --stone-500: #78716C;
    --stone-600: #57534E;
    --stone-700: #44403C;
    --stone-800: #292524;
    --stone-900: #1C1917;
    --amber-400: #FBBF24;
    --amber-500: #F59E0B;
    --amber-600: #D97706;
    --amber-700: #B45309;
    --amber-100: #FEF3C7;
    --slate-700: #334155;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'IBM Plex Sans', sans-serif;
    background: var(--stone-900);
    min-height: 100vh;
    display: flex;
    overflow: hidden;
}
.left-panel {
    width: 55%;
    background: var(--stone-900);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 3rem;
    overflow: hidden;
}
.rock-texture {
    position: absolute;
    inset: 0;
    background-image:
    radial-gradient(ellipse 120px 80px at 20% 30%, rgba(251,191,36,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 200px 150px at 70% 60%, rgba(251,191,36,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 80px 60px at 50% 20%, rgba(251,191,36,0.05) 0%, transparent 70%);
}
.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
}
.left-content { position: relative; z-index: 2; }
.brand-mark {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 3rem;
    position: absolute;
    top: 3rem;
    left: 3rem;
}
.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--amber-500);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand-icon svg { width: 22px; height: 22px; fill: var(--stone-900); }
.brand-name { font-size: 16px; font-weight: 600; color: #fff; letter-spacing: 0.02em; }
.brand-sub { font-size: 11px; color: var(--stone-500); letter-spacing: 0.1em; text-transform: uppercase; }
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 2.5rem;
}
.stat-box {
    background: rgba(255,255,255,0.04);
    border: 0.5px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 1.25rem;
}
.stat-label { font-size: 11px; color: var(--stone-500); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px; }
.stat-val { font-size: 26px; font-weight: 500; color: #fff; font-family: 'IBM Plex Mono', monospace; }
.stat-val span { font-size: 13px; font-weight: 400; color: var(--amber-400); margin-left: 4px; }
.left-tagline { font-size: 32px; font-weight: 300; color: #fff; line-height: 1.3; margin-bottom: 1rem; }
.left-tagline strong { font-weight: 600; color: var(--amber-400); }
.left-desc { font-size: 14px; color: var(--stone-500); line-height: 1.6; max-width: 360px; }
.right-panel {
    width: 45%;
    background: var(--stone-50);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    border-left: 0.5px solid var(--stone-200);
}
.login-card { width: 100%; max-width: 380px; }
.login-header { margin-bottom: 2.5rem; }
.login-header h1 { font-size: 24px; font-weight: 600; color: var(--stone-900); margin-bottom: 6px; }
.login-header p { font-size: 14px; color: var(--stone-500); }
.form-label { font-size: 12px; font-weight: 500; color: var(--stone-600); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 6px; }
.form-control {
    border: 1px solid var(--stone-200);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    font-family: 'IBM Plex Sans', sans-serif;
    color: var(--stone-800);
    background: #fff;
    transition: border-color 0.15s;
}
.form-control:focus {
    border-color: var(--amber-500);
    box-shadow: 0 0 0 3px rgba(245,158,11,0.12);
    outline: none;
}
.role-select {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    margin-bottom: 1.5rem;
}
.role-btn {
    border: 1px solid var(--stone-200);
    border-radius: 8px;
    padding: 10px 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    background: #fff;
}
.role-btn:hover, .role-btn.active {
    border-color: var(--amber-500);
    background: var(--amber-100);
}
.role-btn svg { width: 18px; height: 18px; margin-bottom: 4px; display: block; margin-left: auto; margin-right: auto; }
.role-btn .role-name { font-size: 11px; font-weight: 500; color: var(--stone-700); }
.btn-signin {
    width: 100%;
    background: var(--stone-900);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px;
    font-size: 14px;
    font-weight: 500;
    font-family: 'IBM Plex Sans', sans-serif;
    cursor: pointer;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 0.5rem;
}
.btn-signin:hover { background: var(--stone-700); }
.forgot-link { display: block; text-align: center; margin-top: 1rem; font-size: 13px; color: var(--stone-500); text-decoration: none; }
.forgot-link:hover { color: var(--amber-600); }
.divider { border: none; border-top: 0.5px solid var(--stone-200); margin: 1.5rem 0; }
.system-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: var(--stone-400);
    margin-top: 2rem;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: #22c55e; }
.mb-4 { margin-bottom: 1.25rem; }
@media (max-width: 768px) {
    .left-panel { display: none; }
    .right-panel { width: 100%; }
}