/* Sticky4U - Advanced Sticky Note System Design & Glassmorphic Canvas */

:root {
    --bg-canvas: #090c15;
    --bg-surface: #111726;
    --bg-card: #182032;
    --bg-card-hover: #1f2a42;
    --bg-input: #0b0f19;
    --border-color: #26334d;

    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --accent-purple: #a855f7;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

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

    --shadow-sticky: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-sticky-hover: 0 20px 35px -5px rgba(0, 0, 0, 0.5), 0 12px 15px -6px rgba(0, 0, 0, 0.4);

    --glass-bg: rgba(17, 23, 38, 0.85);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    user-select: none;
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-canvas); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* Header Navigation Bar */
.app-header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1000;
    gap: 1rem;
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-amber), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
}

.brand-title h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #ffffff;
}

.brand-title p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Header Controls & Action Bar */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.storage-mode-toggle {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2px;
    height: 36px;
}

.mode-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
    height: 100%;
}

.mode-btn.active {
    background: var(--bg-card);
    color: #fff;
    border: 1px solid var(--border-color);
}

#user-auth-area {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 36px;
}

#user-auth-area .btn {
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.user-profile-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0 10px;
    border-radius: 20px;
    cursor: pointer;
    transition: border-color 0.2s;
    height: 36px;
}

.user-profile-badge:hover {
    border-color: var(--accent-amber);
}

.user-avatar-img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-name-text {
    font-size: 0.82rem;
    font-weight: 600;
    color: #fff;
    line-height: 1;
    display: inline-block;
}

.workspace-selector-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-md);
}

.workspace-select {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
}

select option {
    background-color: #111726;
    color: #f8fafc;
    padding: 8px;
}

.btn {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-md);
    font-size: 0.83rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-amber);
    color: #fff;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-amber), #d97706);
    border: none;
    color: #fff;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.35);
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-random {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
    border: none;
    color: #fff;
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.35);
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.78rem;
    border-radius: var(--radius-sm);
}

/* Secondary Filter & Layout Bar */
.filter-bar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 0.65rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    z-index: 990;
}

.filter-row-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.search-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.85rem;
    width: 300px;
}

.search-input-group input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 0.85rem;
    width: 100%;
}

.filter-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.view-mode-toggle {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2px;
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
}

.view-btn.active {
    background: var(--bg-card);
    color: #fff;
    border: 1px solid var(--border-color);
}

/* Tag Cloud Bar */
.tag-cloud-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.tag-cloud-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    white-space: nowrap;
}

.tag-cloud-pill {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.25rem 0.65rem;
    border-radius: 12px;
    font-size: 0.75rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.tag-cloud-pill:hover, .tag-cloud-pill.active {
    background: var(--accent-amber);
    color: #fff;
    border-color: var(--accent-amber);
}

/* Main Board Canvas */
.canvas-viewport {
    flex: 1;
    position: relative;
    overflow: auto;
    background-color: #090c15;
    background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
}

.canvas-viewport.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
    padding: 1.5rem;
    overflow-y: auto;
    background-image: none;
}

.canvas-viewport.kanban-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
    padding: 1.5rem;
    overflow-y: auto;
    background-image: none;
}

.kanban-column {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 80vh;
}

.kanban-column-title {
    font-size: 0.88rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

/* Draggable & Resizable Sticky Note Card */
.sticky-note {
    position: absolute;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sticky);
    display: flex;
    flex-direction: column;
    min-width: 250px;
    min-height: 190px;
    transition: box-shadow 0.2s, transform 0.15s;
    user-select: none;
    border: 1px solid rgba(0, 0, 0, 0.18);
    overflow: visible !important;
}

.canvas-viewport.grid-layout .sticky-note,
.canvas-viewport.kanban-layout .sticky-note,
.kanban-column .sticky-note {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    width: 100% !important;
    height: auto !important;
    min-height: 180px;
    margin-bottom: 12px;
}

.sticky-note:hover {
    box-shadow: var(--shadow-sticky-hover);
}

.sticky-note.dragging {
    opacity: 0.9;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    transform: scale(1.02);
    cursor: grabbing;
}

/* Corner Overlapping Badges for Sticky Notes */
.card-corner-badge {
    position: absolute;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
    z-index: 50;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    cursor: pointer;
}

.card-corner-badge:hover {
    transform: scale(1.25);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

/* High Priority: Light Red Background + Red Flame */
.card-priority-badge-high {
    top: -10px;
    left: -10px;
    background: linear-gradient(135deg, #ffffff, #fee2e2);
    border: 2px solid #ef4444;
    color: #dc2626;
}

/* Medium Priority: Light Amber Background + Amber Lightning */
.card-priority-badge-medium {
    top: -10px;
    left: -10px;
    background: linear-gradient(135deg, #ffffff, #fef3c7);
    border: 2px solid #f59e0b;
    color: #d97706;
}

/* Low Priority: Light Green Background + Green Dot */
.card-priority-badge-low {
    top: -10px;
    left: -10px;
    background: linear-gradient(135deg, #ffffff, #dcfce7);
    border: 2px solid #10b981;
    color: #15803d;
}

/* Top-Right Corner: Pinned Thumbtack Badge (Light Rose Background) */
.card-pin-badge-corner {
    top: -10px;
    right: -10px;
    background: linear-gradient(135deg, #ffffff, #ffe4e6);
    border: 2px solid #f43f5e;
    color: #e11d48;
}

/* Sticky Header Bar (Noticeably Darker for High Contrast 3-Tier Card Effect) */
.sticky-header {
    padding: 0.55rem 0.85rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: grab;
    background: rgba(0, 0, 0, 0.16);
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
}

.sticky-title-input {
    background: transparent;
    border: none;
    outline: none;
    font-weight: 700;
    font-size: 0.95rem;
    width: 55%;
    font-family: inherit;
}

.sticky-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    padding: 4px;
    border-radius: 4px;
    opacity: 0.75;
    transition: opacity 0.15s, background 0.15s;
}

.icon-btn:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.15);
}

/* Sticky Rich Body Section */
.sticky-body {
    padding: 0.85rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    user-select: text;
}

.sticky-content {
    background: transparent;
    border: none;
    outline: none;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: none;
    width: 100%;
    height: 100%;
    font-family: inherit;
    color: inherit;
}

/* Checklist Items inside Sticky Note */
.sticky-checklist {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 4px;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
}

.checklist-item.completed span {
    text-decoration: line-through;
    opacity: 0.6;
}

.checklist-item input[type="checkbox"] {
    cursor: pointer;
    width: 15px;
    height: 15px;
}

/* Sticky Footer Bar (Noticeably Darker Contrast) */
.sticky-footer {
    padding: 0.45rem 0.85rem;
    background: rgba(0, 0, 0, 0.16);
    border-top: 1px solid rgba(0, 0, 0, 0.12);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.75rem;
}

.sticky-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.sticky-tag-pill {
    background: rgba(0, 0, 0, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.sticky-tag-pill:hover {
    background: rgba(0, 0, 0, 0.3);
}

.color-palette-popover {
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-collaborators-list {
    display: inline-flex;
    align-items: center;
    margin-right: 4px;
}

.shared-avatar-mini {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    border: 1.5px solid rgba(0, 0, 0, 0.4);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    margin-left: -6px;
    cursor: pointer;
    transition: transform 0.15s ease;
}

.shared-avatar-mini:first-child {
    margin-left: 0;
}

.shared-avatar-mini:hover {
    transform: scale(1.3);
    z-index: 10;
}

.custom-color-picker-input {
    width: 22px;
    height: 22px;
    padding: 0;
    border: 1px solid rgba(0, 0, 0, 0.3);
    background: transparent;
    cursor: pointer;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease;
}

.custom-color-picker-input:hover {
    transform: scale(1.15);
}

.custom-color-picker-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.custom-color-picker-input::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

/* Focused Note Highlight during Keyboard Navigation */
.sticky-note.keyboard-focused {
    outline: 3px solid var(--accent-amber) !important;
    box-shadow: 0 0 25px rgba(245, 158, 11, 0.6) !important;
    transform: scale(1.03) !important;
    z-index: 900 !important;
}

/* Fullscreen Zen Focus HUD Overlay */
.fullscreen-hud {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(17, 23, 38, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    z-index: 3500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    pointer-events: none;
}

.hud-item {
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

kbd {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--accent-amber);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.72rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn-danger {
    background: rgba(244, 63, 94, 0.15);
    color: var(--accent-rose);
    border: 1px solid rgba(244, 63, 94, 0.4);
    transition: all 0.15s ease;
}

.btn-danger:hover {
    background: var(--accent-rose);
    color: #fff;
    border-color: var(--accent-rose);
}

/* Sticky Note Resize Handle */
.resize-handle {
    position: absolute;
    right: 3px;
    bottom: 3px;
    width: 12px;
    height: 12px;
    cursor: se-resize;
    opacity: 0.5;
}

/* Modal System */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body { padding: 1.5rem; overflow-y: auto; display: flex; flex-direction: column; gap: 1.25rem; }
.close-modal { background: transparent; border: none; color: var(--text-muted); font-size: 1.2rem; cursor: pointer; }
.close-modal:hover { color: #fff; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
.form-group input, .form-group textarea, .form-group select {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    outline: none;
}

/* Tabs inside Modal */
.modal-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.modal-tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 12px;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.modal-tab-btn.active {
    background: var(--bg-card);
    color: var(--accent-amber);
}

/* Toast Notifications */
.toast-container { position: fixed; bottom: 25px; right: 25px; display: flex; flex-direction: column; gap: 10px; z-index: 3000; }
.toast {
    background: var(--bg-card);
    border: 1px solid var(--accent-amber);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}