:root {
    --color-primary: #2563EB;
    --color-primary-trasp: #2563ebc2;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #DBEAFE;
    --color-accent: #F59E0B;
    --color-accent-trasp: #f59e0bc9;
    --color-accent-dark: #D97706;
    --color-danger: #DC2626;
    --color-danger-light: #FEE2E2;
    --color-success: #16A34A;
    --color-success-light: #DCFCE7;
    --color-warning: #D97706;
    --color-warning-light: #FEF3C7;

    --color-bg: #F9FAFB;
    --color-surface: #FFFFFF;
    --color-surface-trasp: #ffffffad;
    --color-text: #111827;
    --color-text-secondary: #6B7280;
    --color-border: #E5E7EB;
    --color-shadow: rgba(0, 0, 0, 0.08);
    --color-shadow-md: rgba(0, 0, 0, 0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-md: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 22px;

    --shadow-sm: 0 1px 3px var(--color-shadow);
    --shadow-md: 0 4px 12px var(--color-shadow-md);
    --shadow-lg: 0 8px 24px var(--color-shadow-md);
    --transition: 0.2s ease;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ── Buttons ─────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 11px var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    letter-spacing: 0.01em;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); box-shadow: var(--shadow-sm); }
.btn-primary:active:not(:disabled) { transform: scale(0.98); }

.btn-secondary { background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover:not(:disabled) { background: var(--color-bg); }

.btn-ghost { background: transparent; color: var(--color-primary); }
.btn-ghost:hover:not(:disabled) { background: var(--color-primary-light); }

.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #B91C1C; }

.btn-block { width: 100%; }
.btn-lg { padding: 14px var(--space-lg); font-size: var(--font-size-lg); }

.btn-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 16px rgb(0 0 0 / 50%);
    transition: transform var(--transition), box-shadow var(--transition);
}
.btn-icon:hover { background: var(--color-bg); box-shadow: var(--shadow-md); }

/* ── Forms ───────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: var(--space-xs); }

.form-label { font-size: var(--font-size-sm); font-weight: 500; color: var(--color-text-secondary); }

.form-input,
.form-select,
.form-textarea {
    padding: 12px var(--space-md);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    color: var(--color-text);
    background: var(--color-surface);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    width: 100%;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--color-text-secondary); opacity: 0.7; }

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-textarea { resize: vertical; min-height: 80px; }

.form-error { font-size: var(--font-size-sm); color: var(--color-danger); margin-top: var(--space-xs); }

/* ── Toast ───────────────────────────────────────── */
#js-toast-container {
    position: fixed;
    bottom: calc(var(--space-xl) + var(--map-footer-h, 0px) + var(--space-sm));
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
    pointer-events: none;
    width: calc(100% - var(--space-xl) * 2);
    max-width: 380px;
}

.toast {
    width: 100%;
    padding: 12px var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease;
    pointer-events: auto;
    text-align: center;
}

.toast-success { background: var(--color-success); color: #fff; }
.toast-error   { background: var(--color-danger);  color: #fff; }
.toast-info    { background: var(--color-primary); color: #fff; }
.toast-warning { background: var(--color-warning); color: #fff; }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0);    }
}

/* ── Spinner ─────────────────────────────────────── */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Language switcher ───────────────────────────── */
.lang-switcher {
    display: flex;
    gap: 3px;
    flex-shrink: 0;
}

.lang-btn {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 3px 7px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    line-height: 1.4;
    transition: background var(--transition), color var(--transition);
}

.lang-btn:hover { background: var(--color-bg); }

.lang-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Versione fissa per login/register */
.lang-switcher-fixed {
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 100;
}

/* ── Utilities ───────────────────────────────────── */
.hidden         { display: none !important; }
.text-center    { text-align: center; }
.text-sm        { font-size: var(--font-size-sm); }
.text-secondary { color: var(--color-text-secondary); }
.mt-sm          { margin-top: var(--space-sm); }
.mt-md          { margin-top: var(--space-md); }
.mt-lg          { margin-top: var(--space-lg); }
.gap-sm         { gap: var(--space-sm); }
.flex           { display: flex; }
.flex-col       { flex-direction: column; }
.items-center   { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full         { width: 100%; }