:root {
    --bg-start: #060d18;
    --bg-end: #0e1f36;
    --accent: #38d1ff;
    --accent-dim: #8fd3ff;
    --accent-muted: #9cb8d4;
    --accent-glow: rgba(56, 209, 255, 0.22);
    --accent-glow-strong: rgba(56, 209, 255, 0.38);
    --violet: #a78bfa;
    --violet-glow: rgba(167, 139, 250, 0.18);
    --approved: #10dfaa;
    --approved-glow: rgba(16, 223, 170, 0.22);
    --approved-border: rgba(16, 223, 170, 0.38);
    --rejected: #ff5c72;
    --rejected-glow: rgba(255, 92, 114, 0.22);
    --rejected-border: rgba(255, 92, 114, 0.38);
    --text-primary: #f0f4fc;
    --text-secondary: #b8c8dc;
    --surface-0: rgba(12, 22, 38, 0.84);
    --surface-1: rgba(20, 33, 54, 0.9);
    --surface-2: rgba(28, 43, 68, 0.94);
    --border-soft: rgba(56, 209, 255, 0.16);
    --shadow-soft: 0 20px 48px rgba(2, 7, 18, 0.22);
    --shadow-glow: 0 0 40px rgba(56, 209, 255, 0.08), 0 20px 48px rgba(2, 7, 18, 0.22);
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow-strong); }
    50%       { box-shadow: 0 0 0 6px transparent; }
}

@keyframes shimmer {
    0%   { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes border-glow-pulse {
    0%, 100% { box-shadow: var(--shadow-soft); }
    50%       { box-shadow: var(--shadow-glow); }
}

html, body {
    margin: 0;
    height: 100%;
    font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    background:
        radial-gradient(ellipse at top left, rgba(56, 209, 255, 0.13) 0%, transparent 38%),
        radial-gradient(ellipse at top right, rgba(167, 139, 250, 0.1) 0%, transparent 30%),
        radial-gradient(ellipse at 80% 60%, rgba(255, 120, 80, 0.06) 0%, transparent 28%),
        radial-gradient(ellipse at 20% 80%, rgba(16, 223, 170, 0.05) 0%, transparent 28%),
        linear-gradient(160deg, var(--bg-start) 0%, var(--bg-end) 100%);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
}

body {
    height: 100vh;
    overflow: hidden;
}

a {
    color: var(--accent);
}

pre {
    font-family: Consolas, 'Courier New', monospace;
}

h1:focus {
    outline: none;
}

::selection {
    background: rgba(56, 209, 255, 0.32);
}

html {
    scroll-behavior: smooth;
}

/* === Chat layout (global, to guarantee scroll constraints apply) === */
.chat-page-shell {
    position: fixed !important;
    top: calc(64px + 1.25rem) !important;
    bottom: 1.25rem !important;
    left: 1rem;
    right: 1rem;
    max-width: 90rem;
    margin-inline: auto;
    box-sizing: border-box;
    display: flex !important;
    flex-direction: column;
    overflow: hidden !important;
    z-index: 1;
}

.chat-app-shell {
    flex: 1 1 auto;
    min-height: 0 !important;
    height: 100% !important;
    max-height: 100% !important;
    display: grid !important;
    grid-template-rows: auto minmax(0, 1fr) auto !important;
    overflow: hidden !important;
}

.chat-transcript-shell {
    min-height: 0 !important;
    overflow-y: auto !important;
    overflow-x: clip;
    overscroll-behavior: contain;
}

@media (max-width: 700px) {
    .chat-page-shell {
        left: 0 !important;
        right: 0 !important;
        top: calc(56px + 0.75rem) !important;
        bottom: 0.75rem !important;
    }
}