import streamlit as st

_CSS = """
<style>
/* ── Fonts ─────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

html, body, [class*="css"], [class*="st-"] {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
}

/* ── Main container ─────────────────────────────────────────────────────── */
.main .block-container {
    padding: 2rem 2.5rem 3rem !important;
    max-width: 1200px !important;
}

/* ── Typography ─────────────────────────────────────────────────────────── */
h1 { font-weight: 700 !important; letter-spacing: -0.4px !important; line-height: 1.2 !important; }
h2 { font-weight: 600 !important; color: #2d3748 !important; }
h3 { font-weight: 600 !important; }

[data-testid="stCaptionContainer"] p {
    color: #64748b !important;
    font-size: 0.85rem !important;
}

/* ── Sidebar ────────────────────────────────────────────────────────────── */
[data-testid="stSidebar"] {
    border-right: 1px solid #e2e8f0 !important;
}
[data-testid="stSidebar"] > div:first-child {
    padding-top: 1.5rem;
}
[data-testid="stSidebarUserContent"] h1 {
    font-size: 1.3rem !important;
}

/* ── Metric cards ───────────────────────────────────────────────────────── */
[data-testid="stMetric"] {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.1rem 1.3rem !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
[data-testid="stMetricValue"] {
    font-size: 1.9rem !important;
    font-weight: 700 !important;
    color: #1e6b3b !important;
}
[data-testid="stMetricLabel"] {
    font-size: 0.78rem !important;
    font-weight: 500 !important;
    color: #64748b !important;
    text-transform: uppercase !important;
    letter-spacing: 0.4px !important;
}

/* ── Tabs ───────────────────────────────────────────────────────────────── */
[data-testid="stTabs"] [role="tablist"] {
    gap: 2px;
    border-bottom: 2px solid #e2e8f0 !important;
    padding-bottom: 0 !important;
}
[data-testid="stTabs"] button[role="tab"] {
    border-radius: 8px 8px 0 0 !important;
    font-weight: 500 !important;
    padding: 0.55rem 1.1rem !important;
    color: #64748b !important;
    border: 1px solid transparent !important;
    border-bottom: none !important;
    transition: color 0.15s, background 0.15s;
}
[data-testid="stTabs"] button[role="tab"]:hover {
    color: #1e6b3b !important;
    background: #f4f7f5 !important;
}
[data-testid="stTabs"] button[role="tab"][aria-selected="true"] {
    color: #1e6b3b !important;
    font-weight: 600 !important;
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    border-bottom-color: #ffffff !important;
    margin-bottom: -2px;
}

/* ── Alerts (info / success / warning / error) ──────────────────────────── */
[data-testid="stAlert"] {
    border-radius: 10px !important;
    border-left-width: 4px !important;
    padding: 0.75rem 1rem !important;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
[data-testid="stButton"] > button {
    border-radius: 8px !important;
    font-weight: 500 !important;
    transition: filter 0.15s, transform 0.1s !important;
}
[data-testid="stButton"] > button:hover {
    filter: brightness(0.92) !important;
    transform: translateY(-1px) !important;
}
[data-testid="stButton"] > button[kind="primary"] {
    padding: 0.5rem 1.4rem !important;
    font-weight: 600 !important;
}

/* ── Select / Input ─────────────────────────────────────────────────────── */
[data-testid="stSelectbox"] > div > div,
[data-testid="stTextInput"] > div > div > input {
    border-radius: 8px !important;
}

/* ── Divider ────────────────────────────────────────────────────────────── */
hr {
    border-color: #e2e8f0 !important;
    margin: 0.8rem 0 !important;
}

/* ── Home page cards ────────────────────────────────────────────────────── */
.at-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.at-card h3 {
    margin-top: 0 !important;
    color: #1e6b3b !important;
}
.at-hero {
    background: linear-gradient(135deg, #1e6b3b 0%, #2d9c59 100%);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
    color: #ffffff !important;
}
.at-hero h1, .at-hero p {
    color: #ffffff !important;
    margin: 0 !important;
}
.at-hero h1 { font-size: 2rem !important; margin-bottom: 0.5rem !important; }
.at-hero p  { font-size: 1.05rem !important; opacity: 0.92; }
.at-feature-icon { font-size: 1.8rem; margin-bottom: 0.4rem; }
.at-feature-box {
    background: #f4f7f5;
    border-radius: 12px;
    padding: 1.2rem 1rem;
    text-align: center;
    height: 100%;
}
.at-feature-box p { color: #4a5568 !important; font-size: 0.9rem !important; margin: 0 !important; }
.at-feature-box strong { color: #1a2332 !important; font-size: 0.95rem; }

/* ── Spinner ────────────────────────────────────────────────────────────── */
[data-testid="stSpinner"] > div { border-top-color: #1e6b3b !important; }

/* ── Mobile responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .main .block-container {
        padding: 1rem 0.9rem 2rem !important;
    }
    h1 { font-size: 1.55rem !important; }
    h2 { font-size: 1.15rem !important; }

    /* Stack the 3-column metric row */
    [data-testid="stHorizontalBlock"] {
        flex-wrap: wrap !important;
        gap: 0.6rem !important;
    }
    [data-testid="stHorizontalBlock"] > [data-testid="stColumn"] {
        min-width: calc(50% - 0.3rem) !important;
        flex: 1 1 calc(50% - 0.3rem) !important;
    }

    /* Smaller tab labels */
    [data-testid="stTabs"] button[role="tab"] {
        padding: 0.4rem 0.65rem !important;
        font-size: 0.82rem !important;
    }

    /* Map iframe: shorter on phone */
    .stFoliumChart iframe, iframe[title*="folium"] {
        height: 340px !important;
    }

    .at-hero { padding: 1.5rem 1.25rem; }
    .at-hero h1 { font-size: 1.5rem !important; }
    .at-card { padding: 1.1rem 1.2rem; }
}

@media (max-width: 480px) {
    [data-testid="stHorizontalBlock"] > [data-testid="stColumn"] {
        min-width: 100% !important;
    }
}
</style>
"""


_HIDE_SIDEBAR_CSS = """
<style>
[data-testid="stSidebar"]               { display: none !important; }
[data-testid="stSidebarCollapsedControl"]{ display: none !important; }
.main .block-container { max-width: 900px !important; margin: 0 auto !important; }
</style>
"""


def inject_css() -> None:
    st.markdown(_CSS, unsafe_allow_html=True)


def hide_sidebar() -> None:
    st.markdown(_HIDE_SIDEBAR_CSS, unsafe_allow_html=True)