"""Centralized design tokens and CSS injection for Amplegest."""
from __future__ import annotations
import streamlit as st

# ── Brand ─────────────────────────────────────────────────────────────────────
BRAND_GREEN = "#10b981"
BRAND_GREEN_DARK = "#059669"

# ── Surfaces ──────────────────────────────────────────────────────────────────
BG = "#ffffff"
BG_MUTED = "#fafaf9"
BORDER = "#e5e7eb"
BORDER_STRONG = "#d4d4d4"

# ── Text ──────────────────────────────────────────────────────────────────────
TEXT = "#0a0a0a"
TEXT_MUTED = "#6b7280"
TEXT_FAINT = "#9ca3af"

# ── Semantic palette (light pastel tints) ─────────────────────────────────────
GREEN = "#10b981"
BULL = "#10b981"
BULL_BG = "#ecfdf5"
BULL_BORDER = "#a7f3d0"

RED = "#ef4444"
BEAR = "#ef4444"
BEAR_BG = "#fef2f2"
BEAR_BORDER = "#fecaca"

AMBER = "#f59e0b"
WARN = "#f59e0b"
WARN_BG = "#fffbeb"
WARN_BORDER = "#fde68a"

BLUE = "#3b82f6"
INFO = "#3b82f6"
INFO_BG = "#eff6ff"
INFO_BORDER = "#bfdbfe"

GRAY = "#6b7280"
PURPLE = "#8b5cf6"
AI_BG = "#faf5ff"
AI_BORDER = "#ddd6fe"
AI_COLOR = "#7c3aed"
AI_BADGE_BG = "#ede9fe"

IMPACT_HIGH_BG = "#0f172a"     # slate-900
IMPACT_HIGH_TEXT = "#ffffff"
IMPACT_MED_BG = "#64748b"      # slate-500
IMPACT_MED_TEXT = "#ffffff"
IMPACT_LOW_BG = "transparent"
IMPACT_LOW_TEXT = "#94a3b8"    # slate-400
IMPACT_LOW_BORDER = "#cbd5e1"  # slate-300

# ── Plotly rgba aliases ───────────────────────────────────────────────────────
GREEN_A53 = "rgba(16,185,129,0.53)"
GREEN_A40 = "rgba(16,185,129,0.40)"
RED_A40 = "rgba(239,68,68,0.40)"
PURPLE_A53 = "rgba(139,92,246,0.53)"
BLUE_A53 = "rgba(96,165,250,0.53)"

# ── Radius ────────────────────────────────────────────────────────────────────
RADIUS_CARD = "12px"
RADIUS_BTN = "8px"
RADIUS_CHIP = "6px"

# ── Typographic scale ─────────────────────────────────────────────────────────
FS_PAGE    = "1.55rem"   # ~25px  page/screen title
FS_SECTION = "1.05rem"   # ~17px  section sub-header
FS_CARD    = "0.95rem"   # ~15px  card headline (semibold)
FS_BODY    = "0.9rem"    # ~14.5px body text
FS_META    = "0.75rem"   # ~12px  meta/attribution line
FS_EYEBROW = "0.6rem"    # uppercase micro-label (was scattered 0.56–0.72rem)
FS_SECTION_LABEL = "0.78rem"

# ── Spacing scale ─────────────────────────────────────────────────────────────
SPACE_1 = "4px"
SPACE_2 = "8px"
SPACE_3 = "12px"
SPACE_4 = "16px"
SPACE_5 = "20px"
SPACE_6 = "28px"   # intentionally 8px jump — used for section-break vertical rhythm

# NAV_GROUPS now lives in dashboard.nav — imported from there in app.py.
# Kept as a re-export for any legacy callers.
def _lazy_nav_groups():  # noqa: F401 — accessed via dashboard.nav.NAV_GROUPS
    from dashboard.nav import NAV_GROUPS  # noqa: F401
    return NAV_GROUPS

# ── Logo SVG — geometric P in emerald rounded square ─────────────────────────
LOGO_SVG = """<svg width="36" height="36" viewBox="0 0 36 36" fill="none" xmlns="http://www.w3.org/2000/svg">
  <rect width="36" height="36" rx="9" fill="#10b981"/>
  <path d="M12 26V11H19.5C20.9 11 22.1 11.5 23.1 12.5C24.1 13.5 24.6 14.7 24.6 16.2C24.6 17.7 24.1 18.9 23.1 19.9C22.1 20.9 20.9 21.4 19.5 21.4H15.5V26H12Z" fill="white"/>
  <path d="M15.5 18.2H19C19.8 18.2 20.4 17.9 20.9 17.4C21.4 16.9 21.6 16.2 21.6 15.4C21.6 14.6 21.4 14 20.9 13.5C20.4 13 19.8 12.7 19 12.7H15.5V18.2Z" fill="#10b981"/>
</svg>"""


def inject_global_css() -> None:
    """Inject Inter font + global Amplegest styles. Call once from app.py."""
    st.html(
        """
        <link rel="preconnect" href="https://fonts.googleapis.com">
        <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap" rel="stylesheet">
        <style>
        /* ── Typography ─────────────────────────────────────────────────────── */
        html, body, .stApp, .main, [data-testid="stAppViewContainer"],
        [data-testid="stSidebar"], button, input, select, textarea {
            font-family: Inter, ui-sans-serif, -apple-system, "Segoe UI", sans-serif !important;
        }
        html, body, .stApp, .main, [data-testid="stAppViewContainer"],
        [data-testid="stSidebar"] {
            line-height: 1.6 !important;
        }

        /* ── Hide default Streamlit chrome ──────────────────────────────────── */
        #MainMenu { visibility: hidden; }
        header[data-testid="stHeader"] { background: transparent !important; }
        footer { visibility: hidden; }

        /* ── Canvas background ──────────────────────────────────────────────────── */
        .stApp, [data-testid="stAppViewContainer"] {
            background: #fafaf9 !important;
        }

        /* ── Sidebar ────────────────────────────────────────────────────────── */
        [data-testid="stSidebar"] {
            background-color: #ffffff !important;
            border-right: 1px solid #e5e7eb !important;
        }

        /* ── Logo row (custom div) ──────────────────────────────────────────── */
        .primer-logo-row {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 20px 16px 16px;
            border-bottom: 1px solid #e5e7eb;
            margin-bottom: 12px;
        }
        .primer-logo-wordmark {
            font-size: 1rem;
            font-weight: 700;
            color: #0a0a0a;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .primer-logo-tagline {
            font-size: 0.65rem;
            color: #9ca3af;
            font-weight: 400;
            margin-top: 1px;
        }

        /* ── Text inputs ────────────────────────────────────────────────────── */
        [data-testid="stTextInput"] input {
            border-radius: 8px !important;
            border: 1px solid #e5e7eb !important;
            font-size: 0.9rem !important;
            background: #ffffff !important;
            color: #0a0a0a !important;
        }
        [data-testid="stTextInput"] input:focus {
            border-color: #10b981 !important;
            box-shadow: 0 0 0 2px rgba(16,185,129,0.12) !important;
        }

        /* ── Primary button — dark, not green ──────────────────────────────── */
        [data-testid="stBaseButton-primary"] {
            background: #0a0a0a !important;
            color: #ffffff !important;
            border-radius: 8px !important;
            border: none !important;
            font-weight: 500 !important;
            font-size: 0.875rem !important;
            letter-spacing: 0.01em !important;
        }
        [data-testid="stBaseButton-primary"]:hover {
            background: #1a1a1a !important;
            border: none !important;
        }

        /* ── Secondary / default buttons ────────────────────────────────────── */
        [data-testid="stBaseButton-secondary"] {
            border-radius: 8px !important;
            border: 1px solid #e5e7eb !important;
            font-weight: 500 !important;
            color: #0a0a0a !important;
        }

        /* ── Download button ────────────────────────────────────────────────── */
        [data-testid="stDownloadButton"] button {
            border-radius: 8px !important;
            border: 1px solid #e5e7eb !important;
            font-weight: 500 !important;
            color: #0a0a0a !important;
        }

        /* ── Bordered containers ────────────────────────────────────────────── */
        [data-testid="stVerticalBlockBorderWrapper"] {
            border-radius: 12px !important;
            border: 1px solid #e5e7eb !important;
            box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04) !important;
            background: #ffffff !important;
            padding: 20px 24px !important;
        }

        /* ── Custom card shadow class ───────────────────────────────────────── */
        .primer-card {
            box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        }

        /* ── Section cards (HTML-rendered sections) ─────────────────────────────── */
        .primer-section-card {
            background: #ffffff;
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            padding: 22px 26px;
            margin: 0 0 18px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        }

        /* ── Dividers ───────────────────────────────────────────────────────── */
        hr { border-color: #e5e7eb !important; }

        /* ── Status box ─────────────────────────────────────────────────────── */
        [data-testid="stStatus"] {
            border-radius: 8px !important;
            border: 1px solid #e5e7eb !important;
        }

        /* ── Expanders ──────────────────────────────────────────────────────── */
        [data-testid="stExpander"] {
            border: 1px solid #e5e7eb !important;
            border-radius: 8px !important;
            box-shadow: none !important;
        }

        /* ── Inner tabs (e.g. Numbers chart tabs) ───────────────────────────── */
        [data-testid="stTabs"] [role="tab"] {
            font-size: 0.82rem !important;
            font-weight: 500 !important;
            color: #6b7280 !important;
        }
        [data-testid="stTabs"] [role="tab"][aria-selected="true"] {
            color: #0a0a0a !important;
        }
        [data-testid="stTabs"] [role="tablist"] {
            border-bottom: 1px solid #e5e7eb !important;
        }

        /* ── Captions ───────────────────────────────────────────────────────── */
        .stCaption { color: #9ca3af !important; font-size: 0.78rem !important; }

        /* ── Alerts / info boxes ────────────────────────────────────────────── */
        [data-testid="stAlert"] {
            border-radius: 8px !important;
        }

        /* ── Sidebar nav group expanders (deep-dive accordion) ──────────────── */
        [data-testid="stSidebar"] [data-testid="stExpander"] {
            border: none !important;
            border-top: 1px solid #f0f0ef !important;
            border-radius: 0 !important;
            box-shadow: none !important;
            background: transparent !important;
            margin-top: 2px !important;
        }
        [data-testid="stSidebar"] [data-testid="stExpander"] summary {
            font-size: 0.6rem !important;
            font-weight: 700 !important;
            text-transform: uppercase !important;
            letter-spacing: 0.1em !important;
            color: #9ca3af !important;
            padding: 6px 2px !important;
        }
        [data-testid="stSidebar"] [data-testid="stExpander"] summary:hover {
            color: #6b7280 !important;
        }
        [data-testid="stSidebar"] [data-testid="stExpander"] summary svg {
            width: 12px !important;
            height: 12px !important;
            color: #9ca3af !important;
        }

        /* ── Content max-width ──────────────────────────────────────────────── */
        .main .block-container {
            max-width: 1280px !important;
            padding-top: 24px !important;
        }

        /* ── Prose width (text blocks) ─────────────────────────────────────────── */
        .primer-prose {
            max-width: 700px;
        }

        /* ── Sticky summary bar ─────────────────────────────────────────────────── */
        .primer-sticky-bar {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(250, 250, 249, 0.92);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-bottom: 1px solid #e5e7eb;
            padding: 10px 0;
            margin: 0 0 16px;
        }

        /* ── Chat messages ──────────────────────────────────────────────────── */
        [data-testid="stChatMessage"] {
            border-radius: 10px !important;
            border: 1px solid #e5e7eb !important;
            background: #ffffff !important;
            padding: 12px 14px !important;
            margin-bottom: 8px !important;
            box-shadow: 0 1px 2px rgba(0,0,0,0.04) !important;
        }
        [data-testid="stChatMessage"][data-message-author-role="user"] {
            background: #ffffff !important;
            border-color: #e5e7eb !important;
        }
        [data-testid="stChatMessage"][data-message-author-role="assistant"] {
            background: #faf5ff !important;
            border-color: #ddd6fe !important;
        }

        /* ── Chat input ─────────────────────────────────────────────────────── */
        [data-testid="stChatInput"] {
            border-radius: 10px !important;
            border: 1px solid #e5e7eb !important;
            box-shadow: 0 1px 3px rgba(0,0,0,0.06) !important;
        }
        [data-testid="stChatInput"]:focus-within {
            border-color: #10b981 !important;
            box-shadow: 0 0 0 2px rgba(16,185,129,0.12) !important;
        }
        [data-testid="stChatInput"] textarea {
            font-family: Inter, ui-sans-serif, -apple-system, "Segoe UI", sans-serif !important;
            font-size: 0.9rem !important;
            color: #0a0a0a !important;
        }
        </style>
        """,
    )