:root {
    --green-dark: #1e4620;
    --green: #2d6a30;
    --green-light: #4a9e4d;
    --amber: #d9822b;
    --bg: #f4f6f2;
    --card-bg: #ffffff;
    --text: #23291f;
    --text-muted: #6b7264;
    --border: #e2e6dc;
    --danger: #c0392b;
    --danger-bg: #fdecea;
    --success: #1e7e34;
    --success-bg: #e8f5e9;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 240px;
    background: var(--green-dark);
    color: white;
    flex-shrink: 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.logo-icon { font-size: 24px; }
.logo-text { font-size: 17px; font-weight: 700; letter-spacing: 0.3px; }

.nav-links { list-style: none; padding: 12px 0; }
.nav-links li a {
    display: block;
    padding: 12px 20px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 14px;
    border-left: 3px solid transparent;
    transition: all 0.15s;
}
.nav-links li a:hover { background: rgba(255,255,255,0.06); color: white; }
.nav-links li a.active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left-color: var(--amber);
    font-weight: 600;
}

.content {
    margin-left: 240px;
    padding: 32px 40px;
    flex: 1;
    max-width: 1200px;
}

h1 { font-size: 24px; margin-bottom: 4px; color: var(--green-dark); }
.page-subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }

.flash-messages { margin-bottom: 20px; }
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 10px; font-size: 14px; }
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--danger-bg); color: var(--danger); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--green-dark); }
.stat-value.amber { color: var(--amber); }

.card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 24px;
    margin-bottom: 24px;
}
.card h2 { font-size: 16px; margin-bottom: 16px; color: var(--green-dark); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; padding: 10px 12px; background: var(--bg); color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
td { padding: 12px; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafbf8; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-low { background: var(--danger-bg); color: var(--danger); }
.badge-ok { background: var(--success-bg); color: var(--success); }
.badge-cat { background: #eef2ea; color: var(--green); }

.btn {
    display: inline-block;
    padding: 9px 18px;
    border-radius: 8px;
    border: none;
    background: var(--green);
    color: white;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s;
}
.btn:hover { background: var(--green-dark); }
.btn-secondary { background: white; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #96281d; }
.btn-sm { padding: 5px 12px; font-size: 13px; }

.actions { display: flex; gap: 8px; }

form.inline { display: inline; }

.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }

.form-card { background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border); padding: 28px; max-width: 560px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--green-light); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { margin-top: 8px; display: flex; gap: 10px; }

.vente-line { display: grid; grid-template-columns: 2fr 1fr auto; gap: 10px; align-items: end; margin-bottom: 12px; }
.vente-total { font-size: 20px; font-weight: 700; color: var(--green-dark); text-align: right; margin-top: 16px; }

.mvt-entree { color: var(--success); font-weight: 600; }
.mvt-sortie { color: var(--danger); font-weight: 600; }

/* --- Ajouts pour l'app Firebase/SPA --- */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}
.login-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 36px;
    width: 100%;
    max-width: 380px;
    text-align: center;
}
.login-box .logo-icon { font-size: 40px; display: block; margin-bottom: 8px; }
.login-box h1 { text-align: center; }
.login-box .page-subtitle { margin-bottom: 24px; text-align:center; }

.hidden { display: none !important; }

.loading-spinner {
    display: inline-block;
    width: 16px; height: 16px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.user-email {
    font-size: 12px;
    padding: 10px 20px;
    color: rgba(255,255,255,0.6);
    border-top: 1px solid rgba(255,255,255,0.1);
}
.logout-link { color: var(--amber) !important; cursor: pointer; }
.error-text { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 18px; }