/* SimplyStayFlow v1 UI System: tokens + componenti riusabili */
:root {
    --ui-font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

    --ui-blue-50: #eef5ff;
    --ui-blue-100: #dbe9ff;
    --ui-blue-200: #bfd8ff;
    --ui-blue-300: #93bbf2;
    --ui-blue-400: #5f97df;
    --ui-blue-500: #3582dd;
    --ui-blue-600: #2b6fc7;
    --ui-blue-700: #255ea9;
    --ui-blue-800: #204f74;
    --ui-blue-900: #173a59;

    --ui-text: #2f3e4e;
    --ui-text-soft: #5e6f81;

    --ui-primary-50: var(--ui-blue-50);
    --ui-primary-300: var(--ui-blue-300);
    --ui-primary-500: var(--ui-blue-500);
    --ui-primary-600: var(--ui-blue-600);
    --ui-primary-700: var(--ui-blue-700);

    --ui-border: #c7d3df;
    --ui-border-strong: #b6c5d5;
    --ui-surface: #ffffff;
    --ui-surface-soft: #f7f9fc;
    --ui-bg-page: #f5f7fa;

    --ui-success-bg: #e8f5eb;
    --ui-success-border: #b4ddbf;
    --ui-success-text: #225336;

    --ui-danger-bg: #fbe9ea;
    --ui-danger-border: #efc2c4;
    --ui-danger-text: #7f2f34;

    --ui-warning-bg: #fff6e8;
    --ui-warning-border: #f1d6a8;
    --ui-warning-text: #7a5722;

    --btn-radius: 7px;
    --btn-font-size: 14px;
    --btn-font-weight: 700;
    --btn-padding-y: 10px;
    --btn-padding-x: 14px;
    --btn-transition: transform .12s ease, filter .18s ease, box-shadow .18s ease, border-color .18s ease;
}

html,
body {
    font-family: var(--ui-font-family);
    color: var(--ui-text);
}

body {
    background: var(--ui-bg-page);
    line-height: 1.45;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 10px 0;
    color: #27384a;
    line-height: 1.25;
}

p {
    margin: 0 0 10px 0;
    color: var(--ui-text);
}

small,
.text-muted {
    color: var(--ui-text-soft);
}

a {
    color: #1f4f85;
    text-decoration: none;
    transition: color .16s ease;
}

a:hover {
    color: #163c67;
}

hr {
    border: 0;
    border-top: 1px solid var(--ui-border);
    margin: 14px 0;
}

button,
.btn,
input[type="submit"],
input[type="button"],
input[type="reset"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 0;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--btn-radius);
    border: 1px solid var(--ui-primary-600);
    background: linear-gradient(180deg, var(--ui-primary-500), var(--ui-primary-700));
    color: #ffffff;
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: var(--btn-transition);
}

button:hover,
.btn:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(33, 74, 120, 0.22);
}

button:active,
.btn:active,
input[type="submit"]:active,
input[type="button"]:active,
input[type="reset"]:active {
    transform: translateY(1px);
}

button:focus-visible,
.btn:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible,
input[type="reset"]:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(69, 127, 198, 0.2);
}

button[disabled],
.btn[disabled],
input[type="submit"][disabled],
input[type="button"][disabled],
input[type="reset"][disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    filter: saturate(0.8);
}

.btn-primary {
    border-color: var(--ui-primary-600);
    background: linear-gradient(180deg, var(--ui-primary-500), var(--ui-primary-700));
    color: #ffffff;
}

.btn-secondary {
    border-color: var(--ui-border);
    background: #f7f9fc;
    color: #2d4560;
}

.btn-secondary:hover {
    background: #ffffff;
    border-color: var(--ui-primary-300);
}

.btn-ghost-light {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.62);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
}

.btn-danger {
    border-color: #b84453;
    background: linear-gradient(180deg, #d04f5f, #b6404f);
    color: #ffffff;
}

.btn-danger:hover {
    box-shadow: 0 8px 18px rgba(155, 42, 56, 0.28);
}

.btn-sm {
    padding: 7px 10px;
    font-size: 13px;
    border-radius: 6px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea,
.form-control {
    width: 100%;
    padding: 10px 11px;
    border: 1px solid var(--ui-border);
    border-radius: 6px;
    font-family: var(--ui-font-family);
    font-size: 14px;
    color: #223547;
    background: var(--ui-surface);
    outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus,
.form-control:focus {
    border-color: var(--ui-primary-500);
    box-shadow: 0 0 0 3px rgba(69, 127, 198, 0.18);
}

.alert,
.flash {
    margin: 0 0 12px 0;
    padding: 10px 11px;
    border-radius: 6px;
    border: 1px solid transparent;
    font-size: 13px;
}

.alert-success,
.flash.success {
    background: var(--ui-success-bg);
    border-color: var(--ui-success-border);
    color: var(--ui-success-text);
}

.alert-error,
.flash.error,
.alert-danger {
    background: var(--ui-danger-bg);
    border-color: var(--ui-danger-border);
    color: var(--ui-danger-text);
}

.alert-warning {
    background: var(--ui-warning-bg);
    border-color: var(--ui-warning-border);
    color: var(--ui-warning-text);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
}

.badge-primary {
    background: var(--ui-primary-50);
    border-color: var(--ui-primary-300);
    color: #1f4f85;
}

.badge-success {
    background: var(--ui-success-bg);
    border-color: var(--ui-success-border);
    color: var(--ui-success-text);
}

.badge-danger {
    background: var(--ui-danger-bg);
    border-color: var(--ui-danger-border);
    color: var(--ui-danger-text);
}

.card {
    background: var(--ui-surface);
    border: 1px solid var(--ui-border);
    border-radius: 10px;
    padding: 16px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: var(--ui-surface);
    border: 1px solid var(--ui-border);
    border-radius: 10px;
    overflow: hidden;
}

.table th,
.table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid #e3e9f0;
}

.table thead th {
    background: var(--ui-surface-soft);
    color: #32495f;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.table tbody tr:hover {
    background: #f8fbff;
}

/* Dialog centralizzato (UIDialog): sostituisce alert()/confirm() nativi con lo stesso aspetto ovunque. */
.ui-dialog-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 32, 46, 0.45);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.ui-dialog-overlay.is-open {
    display: flex;
}

.ui-dialog-box {
    background: var(--ui-surface);
    border-radius: 12px;
    box-shadow: 0 16px 44px rgba(15, 30, 48, 0.28);
    max-width: 440px;
    width: 100%;
    overflow: hidden;
    animation: ui-dialog-in .15s ease;
}

@keyframes ui-dialog-in {
    from { opacity: 0; transform: translateY(6px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.ui-dialog-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--ui-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.ui-dialog-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    font-weight: 700;
    flex-shrink: 0;
    background: var(--ui-primary-50);
    color: var(--ui-primary-700);
}

.ui-dialog-overlay.is-danger .ui-dialog-icon {
    background: var(--ui-danger-bg);
    color: var(--ui-danger-text);
}

.ui-dialog-header h4 {
    margin: 0;
    font-size: 15px;
    color: #27384a;
}

.ui-dialog-body {
    padding: 16px 20px;
    font-size: 13px;
    color: var(--ui-text);
    line-height: 1.6;
    white-space: pre-line;
}

.ui-dialog-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--ui-border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    background: var(--ui-surface-soft);
}