:root {
    /* Glassmorphism Theme - Blue & White */
    --primary-color: #3b82f6;
    /* Blue 500 */
    --primary-hover: #2563eb;
    /* Blue 600 */
    --accent-color: #f472b6;
    /* Pink 400 - for subtle gradients */

    --bg-gradient: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --blur: blur(12px);

    --text-primary: #1e293b;
    /* Slate 800 */
    --text-secondary: #64748b;
    /* Slate 500 */

    --success-color: #10b981;
    --danger-color: #ef4444;

    --radius-xl: 24px;
    --radius-md: 12px;
    --font-main: 'Inter', sans-serif;
    --font-display: 'Outfit', sans-serif;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="dark"] {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #60a5fa;
    /* Blue 400 */
}

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

body {
    font-family: var(--font-main);
    background: var(--bg-gradient);
    background-attachment: fixed;
    /* Fix gradient on scroll */
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
    overflow-x: hidden;
}

/* Moving Background Shapes */
body::before,
body::after {
    content: '';
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    animation: float 10s infinite alternate;
}

body::before {
    background: rgba(59, 130, 246, 0.3);
    top: -50px;
    left: -50px;
}

body::after {
    background: rgba(244, 114, 182, 0.3);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

@keyframes float {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(30px, 50px);
    }
}

.app-wrapper {
    width: 100%;
    max-width: 550px;
    position: relative;
}

/* Glass Container Utility */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    align-items: center;
    margin-bottom: 4.5rem;
    /* Increased margin to make room for clock */
    padding: 0 0.5rem;
    position: relative;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 2;
    /* Keep above if overlap */
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 8px 16px -4px rgba(59, 130, 246, 0.5);
    transition: var(--transition);
}

h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Digital Clock in Center */
.clock-container {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 4rem;
    /* Move below the main header row */
    display: flex;
    flex-direction: row;
    /* Horizontal layout for compact pill */
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 10;
    /* Ensure above other elements */

    /* Modern Pill Style */
    background: rgba(255, 255, 255, 0.65);
    /* Slightly more opaque for readability */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    padding: 0.6rem 1.5rem;
    /* More padding */
    border-radius: 50px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    /* Softer shadow */
    transition: var(--transition);
    white-space: nowrap;
    /* Prevent wrapping */
}

[data-theme="dark"] .clock-container {
    background: rgba(30, 41, 59, 0.6);
    border-color: rgba(255, 255, 255, 0.1);
}

.digital-clock {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    /* Larger font */
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 2px;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.5px;
}

.clock-time {
    font-variant-numeric: tabular-nums;
}

.clock-divider {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin: 0 2px;
    animation: blink 2s infinite;
    opacity: 0.8;
    position: relative;
    top: -2px;
    /* Visual alignment */
}

.clock-ampm {
    font-size: 0.85rem;
    font-weight: 800;
    margin-left: 6px;
    color: var(--primary-color);
    text-transform: uppercase;
    transform: translateY(2px);
    /* Align with baseline */
}

#date-display {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
    padding-left: 1rem;
    border-left: 1.5px solid rgba(0, 0, 0, 0.1);
    /* Thicker divider */
    white-space: nowrap;
}

/* Tablet Safety Guard */
@media (max-width: 768px) {
    .clock-container {
        position: relative;
        left: auto;
        transform: none;
        order: 2;
        width: 100%;
        margin-top: 1rem;
        background: transparent;
        box-shadow: none;
        border: none;
        padding: 0.5rem 0;
        justify-content: center;
    }

    .app-header {
        flex-wrap: wrap;
        justify-content: space-between;
    }
}

/* Theme Toggle - Switch Style */
.header-controls {
    display: flex;
    align-items: center;
    z-index: 2;
}

.theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.toggle-track {
    width: 52px;
    height: 28px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 30px;
    position: relative;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(4px);
}

.toggle-handle {
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 1px;
    left: 2px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b;
    /* Sun color */
}

/* Icons inside handle */
.toggle-handle .sun-icon {
    display: block;
    opacity: 1;
    transition: var(--transition);
}

.toggle-handle .moon-icon {
    display: none;
    opacity: 0;
    color: #6366f1;
    /* Moon color */
}

/* Dark Mode State for Toggle */
[data-theme="dark"] .toggle-track {
    background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .toggle-handle {
    left: 24px;
    background: #1e293b;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .toggle-handle .sun-icon {
    display: none;
    opacity: 0;
}

[data-theme="dark"] .toggle-handle .moon-icon {
    display: block;
    opacity: 1;
}

/* OLD .icon-btn styles removed or overridden above */


/* Glass Card Utility */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.glass-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Header Logo Animation */
.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 8px 16px -4px rgba(59, 130, 246, 0.5);
    transition: var(--transition);
    animation: fluid-morph 8s ease-in-out infinite;
}

@keyframes fluid-morph {

    0%,
    100% {
        border-radius: 12px;
        transform: rotate(0deg);
    }

    33% {
        border-radius: 50%;
        transform: rotate(5deg) scale(1.05);
    }

    66% {
        border-radius: 18px 4px 18px 4px;
        transform: rotate(-5deg);
    }
}

/* Overview Section */
.overview-section {
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.progress-card {
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.progress-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0.5;
}

.progress-info h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    background: linear-gradient(90deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.progress-status-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.progress-ring-container {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-circle {
    transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: 50% 50%;
    stroke-linecap: round;
    /* Circumference = 2 * pi * 52 ≈ 326.7 */
    stroke-dasharray: 326.7 326.7;
    stroke-dashoffset: 326.7;
    /* Full offset initially */
    filter: drop-shadow(0 0 4px rgba(244, 114, 182, 0.5));
}

.progress-value-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.progress-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* Input Section - Floating Island */
.input-section {
    position: relative;
    margin-bottom: 2.5rem;
    z-index: 10;
}

.input-wrapper {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
}

[data-theme="dark"] .input-wrapper {
    background: rgba(30, 41, 59, 0.85);
}

.input-top-row {
    margin-bottom: 1rem;
}

#task-input {
    width: 100%;
    background: transparent;
    border: none;
    font-size: 1.2rem;
    padding: 0.5rem;
    color: var(--text-primary);
    font-family: var(--font-main);
}

#task-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

#task-input:focus {
    outline: none;
}

.input-bottom-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}

.input-options {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    align-items: center;
}

.date-picker-wrapper,
.category-wrapper {
    background: rgba(0, 0, 0, 0.04);
    border-radius: 8px;
    padding: 0.3rem 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: 1px solid transparent;
}

.date-picker-wrapper:hover,
.category-wrapper:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .date-picker-wrapper,
[data-theme="dark"] .category-wrapper {
    background: rgba(255, 255, 255, 0.05);
}

.icon {
    font-size: 0.9rem;
    opacity: 0.7;
}

#task-date,
#task-category {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-main);
    font-weight: 500;
    cursor: pointer;
}

#task-date:focus,
#task-category:focus {
    outline: none;
}

/* Custom Category Slide-in */
.custom-category-input {
    width: 0;
    overflow: hidden;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    background: rgba(59, 130, 246, 0.1);
}

.custom-category-input.active {
    width: 140px;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--primary-color);
}

#custom-category-text {
    width: 100%;
    background: transparent;
    border: none;
    font-size: 0.9rem;
    color: var(--primary-color);
}

#custom-category-text:focus {
    outline: none;
}

/* Animated Add Button */
#add-btn {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}

#add-btn .btn-icon {
    font-size: 1.8rem;
    font-weight: 300;
    transition: transform 0.3s;
}

#add-btn:hover {
    transform: scale(1.1) translateY(-2px);
    background: var(--primary-hover);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
}

#add-btn:hover .btn-icon {
    transform: rotate(90deg);
}

#add-btn:active {
    transform: scale(0.95);
}

/* Controls & Search */
.controls-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.3);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.search-container {
    flex: 1;
    position: relative;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

#search-input {
    width: 100%;
    background: transparent;
    border: none;
    padding: 0.5rem 0.5rem 0.5rem 2.5rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

#search-input:focus {
    outline: none;
}

.filter-bar {
    display: flex;
    background: rgba(0, 0, 0, 0.05);
    padding: 2px;
    border-radius: 8px;
    gap: 2px;
}

.filter-btn {
    background: transparent;
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn.active {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .filter-btn.active {
    background: #334155;
}

/* Task List */
.task-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.task-item {
    background: var(--glass-bg);
    backdrop-filter: blur(4px);
    /* Slight extra blur */
    border: 1px solid var(--glass-border);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.task-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    border-color: rgba(59, 130, 246, 0.3);
}

.task-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

/* Custom Checkbox */
.custom-checkbox {
    width: 26px;
    height: 26px;
    border: 2px solid var(--text-secondary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.task-item.completed .custom-checkbox {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
    transform: scale(1.1);
}

.task-content {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    width: 100%;
}

.task-text {
    font-size: 1.05rem;
    font-weight: 500;
    transition: color 0.3s;
}

.task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--text-secondary);
    opacity: 0.8;
}

.task-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.75rem;
}

.task-tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.5px;
}

/* Actions */
.task-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition);
}

.task-item:hover .task-actions,
.task-item:focus-within .task-actions {
    opacity: 1;
    transform: translateX(0);
}

.action-btn {
    background: transparent;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.action-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--danger-color);
}

.edit-btn:hover {
    color: var(--primary-color);
}

/* Animations & States */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOutLeft {
    to {
        opacity: 0;
        transform: translateX(-30px);
    }
}

.delete-animation {
    animation: fadeOutLeft 0.3s forwards;
    pointer-events: none;
}

/* Shake Animation */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-6px);
    }

    40% {
        transform: translateX(6px);
    }

    60% {
        transform: translateX(-3px);
    }

    80% {
        transform: translateX(3px);
    }
}

.shake {
    animation: shake 0.4s cubic-bezier(.36, .07, .19, .97) both;
    border: 1px solid var(--danger-color) !important;
}

/* Theme Toggle Icons */
.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

/* Mobile */
@media (max-width: 600px) {
    .app-header {
        flex-wrap: wrap;
        gap: 1.5rem;
        justify-content: space-between;
        margin-bottom: 1.5rem;
    }

    .logo-container {
        order: 1;
        transform: scale(0.9);
        transform-origin: left;
    }

    .header-controls {
        order: 2;
        transform: scale(0.9);
        transform-origin: right;
    }

    .clock-container {
        position: static;
        /* Stack naturally */
        transform: none;
        order: 3;
        width: 100%;
        margin-top: 0.5rem;
        background: var(--glass-bg);
        padding: 1rem;
        border-radius: var(--radius-md);
        border: 1px solid var(--glass-border);

    }

    .digital-clock {
        font-size: 1rem;

        /* Larger on mobile for focus */
    }

    .overview-section {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .progress-card {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .input-wrapper {
        padding: 0.75rem;
    }

    .input-bottom-row {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .input-options {
        width: 100%;
        justify-content: space-between;
    }

    #add-btn {
        width: 100%;
        height: 48px;
    }

    .progress-details {
        width: 100%;
        justify-content: space-evenly;
    }
}

/* Social Footer */
.app-footer {
    margin-top: 3rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.footer-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.footer-title span {
    color: var(--primary-color);
    font-weight: 700;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(5px);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.social-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.social-badge svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s;
}

.social-badge:hover svg {
    transform: scale(1.1);
}

.github:hover {
    color: #fff;
    background: #333;
    border-color: #333;
}

.linkedin:hover {
    color: #fff;
    background: #0077b5;
    border-color: #0077b5;
}

.instagram:hover {
    color: #fff;
    background: #e4405f;
    border-color: #e4405f;
}

[data-theme="dark"] .social-badge:hover {
    color: white;
    /* Ensure text is readable on colored hover bgs in dark mode too */
}