/* ============================================ 5. APP VIEW ============================================ */
#app-view {
    display: flex; flex-direction: column; height: 100vh; height: 100dvh;
    animation: fadeIn 0.6s ease-out; position: relative; z-index: 1; overflow: hidden;
    --widget-width: min(620px, 42vw);
}
#app-view.state-minimized { --widget-width: 0px; }

/* ============================================ 6. HEADER ============================================ */
#app-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 20px; flex-shrink: 0; position: relative; z-index: 20;
    max-width: 1560px; width: 100%; margin: 0 auto;
}
#app-view.state-minimized #app-header { max-width: 900px; }
.header-left { display: flex; align-items: center; gap: 10px; }
.enso-small {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    object-fit: contain;
    filter: drop-shadow(0 0 7px rgba(196, 169, 106, 0.08));
}
.header-brand-name {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    opacity: 0.86;
    white-space: nowrap;
}
.header-center { flex: 1; text-align: center; padding: 0 12px; }
#greeting-text { font-family: var(--font-serif); font-size: 1rem; font-weight: 300; }
#weather-info { display: inline-block; margin-left: 6px; font-size: 0.78rem; color: var(--text-muted); }
.header-right { display: flex; align-items: center; gap: 8px; }
#theme-toggle-btn,
#widget-toggle-btn {
    width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
    border-radius: 10px; transition: var(--transition-fast); color: var(--text-muted);
}
#theme-toggle-btn:hover,
#widget-toggle-btn:hover { color: var(--text-primary); background: var(--interactive-hover-bg); }
#theme-toggle-btn svg,
#widget-toggle-btn svg { width: 18px; height: 18px; }
#widget-item-badge {
    position: absolute; top: 2px; right: 2px; width: 16px; height: 16px;
    background: var(--accent-gold); color: var(--bg-deep); font-size: 0.65rem; font-weight: 600;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
}
#user-menu-btn { padding: 2px; border-radius: 50%; transition: var(--transition-fast); }
#user-menu-btn:hover { opacity: 0.9; background: var(--interactive-hover-bg); }
#user-avatar { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--border-subtle); }
#user-dropdown {
    position: absolute; right: 20px; top: 56px; background: var(--bg-surface-1);
    border: 1px solid var(--border-subtle); border-radius: 16px; padding: 12px 16px;
    min-width: 180px; box-shadow: var(--shadow-warm); z-index: 100; animation: fadeInUp 0.25s ease-out;
}
#user-name-display { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px solid var(--border-subtle); }
#onboarding-guide-btn,
#saved-memories-btn,
#logout-btn {
    font-size: 0.85rem; width: 100%; text-align: left; padding: 5px 0;
    transition: var(--transition-fast);
}
#onboarding-guide-btn,
#saved-memories-btn { color: var(--text-secondary); margin-bottom: 4px; }
#onboarding-guide-btn:hover,
#saved-memories-btn:hover { color: var(--text-primary); }
#logout-btn { color: var(--danger); }
#logout-btn:hover { color: var(--text-primary); background: rgba(176,96,96,0.09); }

/* ============================================ 7. APP BODY (Two-Column) ============================================ */
#app-body {
    flex: 1; display: flex; gap: 10px; min-height: 0; overflow: hidden;
    max-width: 1560px; width: 100%; margin: 0 auto; padding: 0 20px;
    transition: all var(--transition-layout);
}
#app-view.state-minimized #app-body { max-width: 900px; justify-content: center; }
#chat-column {
    flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0;
    transition: all var(--transition-layout);
}
#app-view.state-minimized #chat-column { max-width: 820px; }

/* ============================================ 8. WIDGET PANEL ============================================ */
#widget-panel {
    width: var(--widget-width); flex-shrink: 0; display: flex; flex-direction: column;
    transition: width var(--transition-layout), opacity 0.4s ease, transform var(--transition-layout);
    overflow: hidden; position: relative;
    min-height: 0; min-width: 0; max-width: var(--widget-width);
    padding-bottom: max(8px, env(safe-area-inset-bottom, 0px));
    container-type: inline-size;
}
#panel-resizer {
    width: 14px; flex: 0 0 14px; position: relative; cursor: col-resize;
    align-self: stretch; touch-action: none; border-radius: 999px;
}
#panel-resizer::before {
    content: ''; position: absolute; top: 18px; bottom: 18px; left: 50%;
    width: 1px; transform: translateX(-50%);
    background: linear-gradient(to bottom, transparent, var(--border-subtle) 18%, var(--border-subtle) 82%, transparent);
    opacity: 0.45; transition: opacity var(--transition-fast), background var(--transition-fast);
}
#panel-resizer::after {
    content: ''; position: absolute; top: 50%; left: 50%; width: 5px; height: 42px;
    border-radius: 999px; transform: translate(-50%, -50%);
    background: rgba(255,255,255,0.045); opacity: 0; transition: opacity var(--transition-fast);
}
#panel-resizer:hover::before,
body.resizing-panel #panel-resizer::before { opacity: 0.9; background: linear-gradient(to bottom, transparent, var(--accent-gold) 18%, var(--accent-gold) 82%, transparent); }
#panel-resizer:hover::after,
body.resizing-panel #panel-resizer::after { opacity: 1; }
body.resizing-panel {
    cursor: col-resize; user-select: none;
}
#app-view.state-minimized #panel-resizer { display: none; }
.widget-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 7px 0 4px; margin-bottom: 2px; flex-shrink: 0; min-width: 0;
}
.widget-header-main { display: flex; align-items: center; gap: 8px; min-width: 0; flex-wrap: wrap; }
.widget-tabs { display: flex; gap: 4px; min-width: 0; }
.widget-tab {
    display: inline-flex; align-items: baseline; gap: 5px;
    padding: 5px 14px; font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase;
    color: var(--text-muted); border-radius: 10px; transition: var(--transition-fast);
}
.widget-tab:hover { color: var(--text-primary); background: var(--interactive-hover-bg); }
.widget-tab.active { color: var(--text-primary); background: rgba(255,255,255,0.05); }
:root[data-theme="light"] .widget-tab.active {
    color: var(--text-primary);
    background: rgba(192, 111, 66, 0.16);
}
.widget-tab-count {
    color: var(--text-muted); opacity: 0.62; font-size: 0.7em; font-weight: 400;
    letter-spacing: 0; font-variant-numeric: tabular-nums;
}
.widget-content { flex: 1; padding-bottom: 12px; min-height: 0; min-width: 0; overflow-x: hidden; overflow-y: auto; }
.widget-content-fixed { flex-shrink: 0; padding: 8px 0 4px; border-top: 1px solid var(--border-subtle); margin-top: auto; min-width: 0; }

@media (hover: none) {
    :where(#theme-toggle-btn, #widget-toggle-btn, #user-menu-btn, #onboarding-guide-btn, #saved-memories-btn, #logout-btn, .widget-tab):active {
        background: var(--interactive-press-bg);
        color: var(--text-primary);
    }
}