/* ==========================================
   TEAMFLOW GLOBAL CSS & DESIGN SYSTEM
   ========================================== */

/* Design Tokens & Theme Variables */
:root {
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Theme Transition */
    --transition-speed: 0.3s;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Toast Duration default */
    --toast-duration: 3000ms;
}

/* Dark Theme Variables (Default) */
[data-theme="dark"] {
    --bg-app: #090d16;
    --bg-header: rgba(13, 20, 35, 0.75);
    --bg-card: rgba(20, 30, 54, 0.65);
    --bg-card-hover: rgba(28, 42, 75, 0.85);
    --bg-input: rgba(13, 20, 35, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.16);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 16px -4px rgba(0, 0, 0, 0.3), 0 4px 8px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 24px -4px rgba(0, 0, 0, 0.4), 0 8px 12px -2px rgba(0, 0, 0, 0.3);
    
    /* Colors & Priorities */
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.25);
    
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.15);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.15);
    --color-info: #06b6d4;
    --color-info-bg: rgba(6, 182, 212, 0.15);
    --color-neutral: #64748b;
    --color-neutral-bg: rgba(100, 116, 139, 0.15);
    
    --scrollbar-thumb: #1e293b;
    --scrollbar-track: #090d16;
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-app: #f8fafc;
    --bg-header: rgba(255, 255, 255, 0.85);
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: #ffffff;
    --bg-input: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 0, 0, 0.15);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 16px 24px -4px rgba(0, 0, 0, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
    
    /* Colors & Priorities */
    --color-primary: #4f46e5;
    --color-primary-hover: #3730a3;
    --color-primary-glow: rgba(79, 70, 229, 0.15);
    
    --color-success: #059669;
    --color-success-bg: rgba(5, 150, 105, 0.1);
    --color-warning: #d97706;
    --color-warning-bg: rgba(217, 119, 6, 0.1);
    --color-danger: #dc2626;
    --color-danger-bg: rgba(220, 38, 38, 0.1);
    --color-info: #0891b2;
    --color-info-bg: rgba(8, 145, 178, 0.1);
    --color-neutral: #475569;
    --color-neutral-bg: rgba(71, 85, 105, 0.15);
    
    --scrollbar-thumb: #cbd5e1;
    --scrollbar-track: #f1f5f9;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-smooth),
                color var(--transition-speed) var(--transition-smooth);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==========================================
   HEADER COMPONENT
   ========================================== */
.app-header {
    background-color: var(--bg-header);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), #a855f7);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.1;
    background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text span {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.theme-toggle-btn {
    width: 38px;
    height: 38px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.theme-toggle-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    transform: scale(1.05);
}

.role-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-input);
    padding: 0.35rem 0.75rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s;
}

.role-selector-wrapper:focus-within {
    border-color: var(--color-primary);
}

.role-selector-wrapper label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.role-select {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding-right: 0.5rem;
}

.role-select optgroup {
    background-color: var(--bg-app);
    color: var(--text-primary);
}

.role-select option {
    background-color: var(--bg-app);
    color: var(--text-primary);
}

/* ==========================================
   BUTTONS & FORM ELEMENTS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s var(--transition-smooth);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(to right, var(--color-primary), #7c3aed);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--color-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--color-primary-glow);
    opacity: 0.95;
}

.btn-secondary {
    background-color: var(--bg-input);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: var(--border-color-hover);
    background-color: var(--bg-card-hover);
}

.btn-tertiary {
    background-color: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}

.btn-tertiary:hover {
    color: var(--text-primary);
    background-color: var(--border-color);
}

/* Inputs */
input[type="text"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    outline: none;
    transition: all 0.2s;
}

input[type="text"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

/* ==========================================
   APP LAYOUT & PANELS
   ========================================== */
.app-main {
    flex: 1;
    padding: 2rem;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

.view-section {
    animation: fadeIn 0.4s var(--transition-smooth);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Stats Cards Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-color-hover);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.icon-total { background-color: var(--color-primary-glow); color: var(--color-primary); }
.icon-pending { background-color: var(--color-warning-bg); color: var(--color-warning); }
.icon-review { background-color: var(--color-info-bg); color: var(--color-info); }
.icon-completed { background-color: var(--color-success-bg); color: var(--color-success); }
.icon-overdue { background-color: var(--color-danger-bg); color: var(--color-danger); }

.stat-card-danger {
    border-color: rgba(239, 68, 68, 0.2);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

/* Dashboard Panels Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 1.5rem;
    align-items: start;
}

.dashboard-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

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

.panel-header h2 {
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.badge {
    padding: 0.2rem 0.6rem;
    background-color: var(--scrollbar-thumb);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.panel-body {
    padding: 1.5rem;
}

/* ==========================================
   TEAM MANAGEMENT VIEW
   ========================================== */
.team-members-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
    max-height: 380px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.team-member-item {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    transition: transform 0.2s, border-color 0.2s;
}

.team-member-item:hover {
    border-color: var(--border-color-hover);
}

.member-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.member-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.member-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #a855f7, #6366f1);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.member-name {
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-delete-member {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 6px;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s;
}

.team-member-item:hover .btn-delete-member {
    opacity: 1;
}

.btn-delete-member:hover {
    color: var(--color-danger);
    background-color: var(--color-danger-bg);
}

/* Member progress indicators */
.member-progress-container {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.progress-label-bar {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-bg-bar {
    height: 6px;
    background-color: var(--scrollbar-thumb);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill-bar {
    height: 100%;
    background: linear-gradient(to right, var(--color-primary), var(--color-success));
    border-radius: 3px;
    width: 0%;
    transition: width 0.4s ease;
}

.add-member-form {
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

/* ==========================================
   MASTER TASK TABLE
   ========================================== */
.task-filters {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.search-box {
    position: relative;
    width: 220px;
}

.search-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.search-box input {
    padding-left: 2rem;
}

.filter-select {
    width: 140px;
}

.table-responsive {
    overflow-x: auto;
}

.master-task-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.master-task-table th,
.master-task-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.master-task-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .master-task-table th {
    background-color: rgba(255, 255, 255, 0.02);
}

.master-task-table tr:hover td {
    background-color: rgba(0, 0, 0, 0.015);
}

[data-theme="dark"] .master-task-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.015);
}

.cell-task-name {
    font-weight: 600;
    color: var(--text-primary);
}

.cell-task-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 400;
    max-width: 250px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Badges for priority and status */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-todo { background-color: var(--color-neutral-bg); color: var(--color-neutral); }
.status-inprogress { background-color: var(--color-warning-bg); color: var(--color-warning); }
.status-inreview { background-color: var(--color-info-bg); color: var(--color-info); }
.status-done { background-color: var(--color-success-bg); color: var(--color-success); }

.priority-badge {
    display: inline-flex;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
}

.priority-low { background-color: var(--color-success-bg); color: var(--color-success); }
.priority-medium { background-color: var(--color-warning-bg); color: var(--color-warning); }
.priority-high { background-color: var(--color-danger-bg); color: var(--color-danger); }

.frequency-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.freq-none { background-color: var(--color-neutral-bg); color: var(--color-neutral); }
.freq-daily { background-color: rgba(99, 102, 241, 0.15); color: var(--color-primary); }
.freq-weekly { background-color: rgba(6, 182, 212, 0.15); color: var(--color-info); }
.freq-monthly { background-color: rgba(168, 85, 247, 0.15); color: #a855f7; }
.freq-yearly { background-color: rgba(236, 72, 153, 0.15); color: #ec4899; }

.card-freq-box {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-secondary);
    background-color: var(--scrollbar-thumb);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.cell-deadline {
    font-family: monospace;
    font-size: 0.85rem;
    font-weight: 600;
}

.deadline-overdue {
    color: var(--color-danger);
    background-color: var(--color-danger-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.deadline-soon {
    color: var(--color-warning);
    background-color: var(--color-warning-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.table-actions {
    display: flex;
    gap: 0.35rem;
}

.table-action-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    padding: 0.35rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.table-action-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.table-action-btn-danger:hover {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

.no-tasks-state {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.no-tasks-state i {
    font-size: 2.5rem;
}

/* ==========================================
   KANBAN BOARD VIEW
   ========================================== */
.member-view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.member-info-title h2 {
    font-size: 1.5rem;
    font-weight: 800;
}

.member-info-title p {
    color: var(--text-secondary);
}

.member-stats-mini {
    display: flex;
    gap: 1rem;
}

.mini-stat {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    min-width: 75px;
}

.mini-stat-num {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
}

.mini-stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    align-items: start;
}

.kanban-column {
    background-color: rgba(20, 30, 54, 0.2);
    border: 1px dashed var(--border-color);
    border-radius: 16px;
    padding: 1rem;
    min-height: 550px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: background-color 0.2s, border-color 0.2s;
}

[data-theme="light"] .kanban-column {
    background-color: rgba(0, 0, 0, 0.02);
}

.kanban-column.drag-over {
    background-color: rgba(99, 102, 241, 0.05);
    border-color: var(--color-primary);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.column-header h3 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.column-count {
    background-color: var(--scrollbar-thumb);
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.kanban-cards {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    overflow-y: auto;
    padding-bottom: 2rem;
}

/* Kanban Cards styling */
.kanban-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    cursor: grab;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    user-select: none;
}

.kanban-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color-hover);
}

.kanban-card:active {
    cursor: grabbing;
}

.kanban-card.dragging {
    opacity: 0.4;
    cursor: grabbing;
}

/* Priority Line indicator */
.card-priority-indicator {
    height: 4px;
    width: 40px;
    border-radius: 2px;
    margin-bottom: 0.75rem;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.card-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}

.card-deadline-box {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.card-actions {
    display: flex;
    gap: 0.25rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.kanban-card:hover .card-actions {
    opacity: 1;
}

.card-action-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: color 0.15s, background-color 0.15s;
}

.card-action-btn:hover {
    color: var(--text-primary);
    background-color: var(--border-color);
}

.card-action-btn-danger:hover {
    color: var(--color-danger);
    background-color: var(--color-danger-bg);
}

/* ==========================================
   MODAL COMPONENT
   ========================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(9, 13, 22, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

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

.modal-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.95);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.modal-overlay.open .modal-container {
    transform: translateY(0) scale(1);
}

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

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.15s;
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

#taskForm {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
}

/* ==========================================
   TOAST NOTIFICATIONS
   ========================================== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.toast {
    background-color: var(--bg-card);
    border-left: 4px solid var(--color-primary);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 250px;
    animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards,
               toastOut 0.3s ease var(--toast-duration) forwards;
}

.toast-success { border-left-color: var(--color-success); }
.toast-danger { border-left-color: var(--color-danger); }
.toast-warning { border-left-color: var(--color-warning); }

@keyframes toastIn {
    from { transform: translateX(100%) opacity: 0; }
    to { transform: translateX(0) opacity: 1; }
}

@keyframes toastOut {
    from { transform: translateX(0) opacity: 1; }
    to { transform: translateX(100%) opacity: 0; }
}

/* ==========================================
   RESPONSIVENESS & MEDIA QUERIES
   ========================================== */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
    }
    .kanban-column {
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
        padding: 1rem;
    }
    .header-actions {
        justify-content: space-between;
    }
    .app-main {
        padding: 1rem;
    }
    .task-filters {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .search-box, .filter-select {
        width: 100%;
    }
    .kanban-board {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}