:root {
    --q1-h: 0;
    --q1-s: 84%;
    --q1-l: 60%;
    --q1-color: hsl(var(--q1-h), var(--q1-s), var(--q1-l));
    --q1-glow: hsla(var(--q1-h), var(--q1-s), var(--q1-l), 0.25);

    --q2-h: 239;
    --q2-s: 84%;
    --q2-l: 67%;
    --q2-color: hsl(var(--q2-h), var(--q2-s), var(--q2-l));
    --q2-glow: hsla(var(--q2-h), var(--q2-s), var(--q2-l), 0.25);

    --q3-h: 38;
    --q3-s: 92%;
    --q3-l: 50%;
    --q3-color: hsl(var(--q3-h), var(--q3-s), var(--q3-l));
    --q3-glow: hsla(var(--q3-h), var(--q3-s), var(--q3-l), 0.25);

    --q4-h: 215;
    --q4-s: 16%;
    --q4-l: 47%;
    --q4-color: hsl(var(--q4-h), var(--q4-s), var(--q4-l));
    --q4-glow: hsla(var(--q4-h), var(--q4-s), var(--q4-l), 0.25);
}

.tasks-container {
    padding-top: 120px;
    padding-bottom: 10rem;
    max-width: 1400px;
}

.tasks-header {
    text-align: center;
    margin-bottom: 5rem;
    animation: fadeInDown 0.8s ease-out;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

.tasks-header h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: white;
    letter-spacing: -1px;
}

.tasks-header p {
    font-size: 1.3rem;
    color: var(--text-dim);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Stats Strip Enhancements */
.stats-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-bottom: 6rem;
}

.stat-box {
    background: var(--bg-card);
    backdrop-filter: blur(28px);
    border: 1px solid var(--border-bright);
    padding: 3rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--tr-spring);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md), var(--glass-inner-glow);
}

.stat-box:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.5);
}

.stat-box .value {
    font-size: 2.8rem;
    font-weight: 900;
    color: white;
    display: block;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 0.5rem;
}

.stat-box .label {
    font-size: 0.9rem;
    color: var(--text-dim);
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 1px;
}

.stat-box.secondary { border-bottom: 3px solid var(--secondary); }
.stat-box.accent { border-bottom: 3px solid var(--accent); }

/* Strategic Matrix Layout */
.matrix-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 6rem;
}

.quadrant {
    background: var(--bg-card);
    backdrop-filter: blur(35px);
    border: 1px solid var(--border-bright);
    border-radius: 40px;
    padding: 3.5rem;
    min-height: 550px;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    transition: var(--tr-spring);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--glass-inner-glow);
}

.quadrant:hover {
    transform: translateY(-15px) scale(1.02);
    background: var(--bg-card-hover);
    box-shadow: 0 60px 100px -20px rgba(0, 0, 0, 0.6), var(--glass-inner-glow);
}

.quadrant::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--q4-color);
    box-shadow: 0 0 20px var(--q4-glow);
}

.quadrant.q1::before { background: var(--q1-color); box-shadow: 0 0 25px var(--q1-glow); }
.quadrant.q2::before { background: var(--q2-color); box-shadow: 0 0 25px var(--q2-glow); }
.quadrant.q3::before { background: var(--q3-color); box-shadow: 0 0 25px var(--q3-glow); }

.quad-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 1.5rem;
}

.quad-title {
    font-size: 1.5rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 0.3rem;
}

.quad-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quadrant.q1 .quad-title { color: var(--q1-color); }
.quadrant.q2 .quad-title { color: var(--q2-color); }
.quadrant.q3 .quad-title { color: var(--q3-color); }

.quad-input-row {
    display: flex;
    gap: 1rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--tr-normal);
}

.quad-input-row:focus-within {
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 20px var(--primary-glow);
}

.quad-input-row input {
    flex: 1;
    background: none;
    border: none;
    padding: 1rem 1.2rem;
    color: white;
    font-size: 1rem;
    outline: none;
    font-weight: 500;
}

.quad-add-btn {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border: none;
    color: white;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--tr-spring);
    box-shadow: 0 8px 16px var(--primary-glow);
}

.quad-add-btn:hover {
    transform: rotate(90deg) scale(1.1);
    background: var(--primary-light);
}

.quad-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    flex: 1;
    overflow-y: auto;
    padding-right: 8px;
    margin-top: 1rem;
}

.quad-list::-webkit-scrollbar { width: 4px; }
.quad-list::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 10px; }

.quad-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.2rem;
    border-radius: 18px;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: var(--tr-normal);
    animation: taskIn 0.5s cubic-bezier(0.23, 1, 0.32, 1) backwards;
}

@keyframes taskIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.quad-item:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateX(-5px);
}

.task-check {
    width: 26px;
    height: 26px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--tr-normal);
    flex-shrink: 0;
}

.task-check i {
    font-size: 0.85rem;
    color: white;
    opacity: 0;
    transform: scale(0.5);
    transition: var(--tr-spring);
}

.quad-item.completed {
    opacity: 0.6;
}

.quad-item.completed .task-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.quad-item.completed .task-check {
    background: var(--secondary);
    border-color: var(--secondary);
    box-shadow: 0 0 15px var(--secondary-glow);
}

.quad-item.completed .task-check i {
    opacity: 1;
    transform: scale(1);
}

.task-text {
    flex: 1;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-light);
}

.task-actions {
    opacity: 0;
    transition: var(--tr-normal);
}

.quad-item:hover .task-actions {
    opacity: 1;
}

.task-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    transition: var(--tr-normal);
}

.task-delete:hover {
    color: #ef4444;
    transform: scale(1.2);
    filter: drop-shadow(0 0 8px rgba(239, 68, 68, 0.3));
}

/* Unified Task List Section */
.tasks-unified-list {
    margin-top: 8rem;
    padding-bottom: 5rem;
}

.tasks-card {
    padding: 4.5rem;
    background: var(--bg-card);
    backdrop-filter: blur(60px);
    border: 1px solid var(--border-bright);
    border-radius: 48px;
    box-shadow: 0 70px 140px -40px rgba(0,0,0,0.8), var(--glass-inner-glow);
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
}

.task-input-group {
    display: flex;
    gap: 1.2rem;
    background: rgba(0, 0, 0, 0.25);
    padding: 0.8rem;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.task-input-group input {
    flex: 3;
    background: none;
    border: none;
    padding: 1.2rem 1.8rem;
    color: white;
    font-size: 1.2rem;
    outline: none;
    font-weight: 600;
}

.task-input-group select {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    color: white;
    padding: 0 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    font-weight: 700;
    transition: var(--tr-normal);
}

.task-input-group select:hover { background: rgba(255, 255, 255, 0.08); }

.add-task-btn {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    transition: var(--tr-spring);
    font-size: 1.8rem;
    box-shadow: 0 10px 20px var(--primary-glow);
}

.add-task-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 30px var(--primary-glow);
}

.pomo-task-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.5rem 2rem;
    border-radius: 24px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--tr-normal);
}

.pomo-task-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(-15px);
}

.pomo-task-item.completed {
    opacity: 0.6;
}

.pomo-task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.pomo-task-item.completed .task-check {
    background: var(--secondary);
    border-color: var(--secondary);
    box-shadow: 0 0 15px var(--secondary-glow);
}

.pomo-task-item.completed .task-check i {
    opacity: 1;
    transform: scale(1);
}

.tasks-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tasks-remaining {
    font-weight: 800;
    color: var(--text-dim);
    font-size: 1.1rem;
}

.clear-btn {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 1rem 2rem;
    border-radius: 18px;
    font-weight: 800;
    cursor: pointer;
    transition: var(--tr-normal);
}

.clear-btn:hover {
    background: #ef4444;
    color: white;
    transform: translateY(-3px);
}

@media (max-width: 1024px) {
    .matrix-container { grid-template-columns: 1fr; gap: 2rem; }
    .tasks-header h1 { font-size: 3rem; }
}

@media (max-width: 768px) {
    .task-input-group { flex-direction: column; padding: 1rem; }
    .add-task-btn { width: 100%; height: 60px; }
    .stats-strip { grid-template-columns: 1fr; }
}