/* notepad.css */

/* Full-height layout — make the editor fill the viewport */
html, body.tool-body {
    height: 100%;
}
body.tool-body {
    min-height: unset;
}

.notepad-main {
    max-width: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0; /* allow flex shrink */
}

/* ── Tab bar ───────────────────────────────────────────────────────────────── */
.tab-bar {
    display: flex;
    align-items: stretch;
    overflow-x: auto;
    background: #e9ecef;
    border-bottom: 1px solid var(--color-border);
    padding: 0 0.25rem;
    gap: 0;
    scrollbar-width: thin;
    min-height: 38px;
}

.tab {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0 0.75rem;
    height: 38px;
    background: transparent;
    border: none;
    border-right: 1px solid #ccc;
    cursor: pointer;
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
    position: relative;
}
.tab:hover { background: #dee2e6; color: var(--color-text); }
.tab.active {
    background: var(--color-surface);
    color: var(--color-text);
    font-weight: 600;
    border-bottom: 2px solid var(--color-primary);
}

.tab-name {
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.tab-close {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.75rem;
    color: #999;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
    transition: background 0.15s, color 0.15s;
}
.tab-close:hover { background: #dc3545; color: #fff; }

.tab.unsaved .tab-name::after {
    content: "●";
    font-size: 0.55rem;
    color: var(--color-primary);
    margin-left: 4px;
    vertical-align: super;
}

.new-tab-btn {
    padding: 0 0.85rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    height: 38px;
    transition: color 0.15s;
    flex-shrink: 0;
}
.new-tab-btn:hover { color: var(--color-primary); }

/* ── Toolbar ───────────────────────────────────────────────────────────────── */
.notepad-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.75rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    gap: 0.5rem;
    flex-wrap: wrap;
}

.toolbar-left {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.tb-btn {
    padding: 0.3rem 0.7rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    cursor: pointer;
    font-family: var(--font-main);
    font-weight: 500;
    transition: background 0.15s;
    white-space: nowrap;
}
.tb-btn:hover { background: var(--color-primary-dk); }
.tb-btn.secondary { background: #6c757d; }
.tb-btn.secondary:hover { background: #545b62; }

.char-count {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

/* ── Editor ────────────────────────────────────────────────────────────────── */
.notepad-editor {
    flex: 1;
    width: 100%;
    min-height: 0;
    resize: none;
    border: none;
    border-radius: 0;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 26px; /* explicit px so gradient can match exactly */
    padding: 1rem 1.2rem;
    background: #fff;
    color: var(--color-text);
    tab-size: 4;
    /* lined background — one rule line per text line.
       Gradient repeats every 26px (= line-height).
       background-position offsets it down by padding-top (1rem = 16px). */
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 25px,
        #dde3ec 25px,
        #dde3ec 26px
    );
    background-attachment: local;
    background-position: 0 1rem;
}
.notepad-editor:focus { outline: none; }

/* ── Rename input ─────────────────────────────────────────────────────────── */
.rename-input {
    position: fixed;
    z-index: 999;
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.5rem;
    font-family: var(--font-main);
    font-size: 0.85rem;
    min-width: 140px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.rename-input.hidden { display: none; }

@media (max-width: 480px) {
    .tb-btn { font-size: 0.75rem; padding: 0.25rem 0.5rem; }
    .notepad-editor { font-size: 0.85rem; }
}