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

:root {
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --secondary-color: #ff006e;
    --success-color: #00ff88;
    --danger-color: #ff3860;
    --warning-color: #ffb700;
    --info-color: #00d4ff;
    --dark-bg: #0a0e27;
    --darker-bg: #050812;
    --card-bg: #1a1f3a;
    --card-hover: #222847;
    --text-light: #e0e0e0;
    --text-lighter: #a0a0a0;
    --border-color: #2a2f4a;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.3);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    background-image: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, rgba(255, 0, 110, 0.1) 0%, transparent 50%);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, rgba(10, 14, 39, 0.95) 0%, rgba(5, 8, 18, 0.95) 100%) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.1);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary-color) !important;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    letter-spacing: -0.5px;
}

.nav-link {
    color: var(--text-lighter) !important;
    transition: var(--transition);
    margin-left: 1.5rem;
    font-weight: 500;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Header Section */
.header-section {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(255, 0, 110, 0.05) 100%);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 2rem 0;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.header-section h1 {
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-section .lead {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-lighter);
}

.header-section .text-muted {
    color: var(--text-lighter) !important;
}

/* Weather Widget */
.weather-widget {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(255, 0, 110, 0.1) 100%);
    border-radius: 20px;
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 212, 255, 0.3);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.weather-info {
    color: var(--text-light);
}

.weather-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.temperature {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.weather-description {
    font-size: 0.9rem;
    color: var(--text-lighter);
}

/* Main Content */
.main-content {
    margin-top: 0;
    padding-bottom: 2rem;
}

/* Sidebar */
.sidebar {
    margin-bottom: 1.5rem;
}

/* Cards */
.card {
    border: none;
    border-radius: 16px;
    background: var(--card-bg);
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.card:hover {
    background: var(--card-hover);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.15);
    transform: translateY(-3px);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    background: rgba(0, 212, 255, 0.05);
    color: var(--primary-color);
}

.card-header.bg-gradient-primary {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%) !important;
    border-bottom-color: rgba(0, 212, 255, 0.2);
}

.card-header.bg-gradient-success {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%) !important;
    border-bottom-color: rgba(0, 255, 136, 0.2);
    color: var(--success-color);
}

.card-header.bg-gradient-info {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%) !important;
    border-bottom-color: rgba(0, 212, 255, 0.2);
    color: var(--info-color);
}

.card-header.bg-gradient-warning {
    background: linear-gradient(135deg, rgba(255, 183, 0, 0.1) 0%, rgba(255, 183, 0, 0.05) 100%) !important;
    border-bottom-color: rgba(255, 183, 0, 0.2);
    color: var(--warning-color);
}

/* Category List */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-lighter);
}

.category-btn:hover {
    border-color: var(--primary-color);
    background: var(--card-hover);
    color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.category-btn.active {
    border-color: var(--primary-color);
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary-color);
    box-shadow: var(--glow);
}

.category-btn i {
    margin-right: 0.75rem;
    width: 20px;
}

/* Stats */
.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item span {
    color: var(--text-light);
    font-size: 0.9rem;
}

.stat-item strong {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Add Task Card */
.add-task-card {
    margin-bottom: 2rem;
}

.add-task-card .card-body {
    padding: 1.5rem;
}

.form-control {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
    transition: var(--transition);
    background: rgba(26, 31, 58, 0.5);
    color: var(--text-light);
}

.form-control:focus {
    border-color: var(--primary-color);
    background: rgba(26, 31, 58, 0.8);
    color: var(--text-light);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.form-control::placeholder {
    color: var(--text-lighter);
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-size: 0.85rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0099cc 100%);
    border: none;
    border-radius: 10px;
    padding: 0.85rem 1.5rem;
    font-weight: 700;
    transition: var(--transition);
    color: var(--dark-bg);
    text-shadow: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
    background: linear-gradient(135deg, #0099cc 0%, #0077aa 100%);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Schedule Container */
.schedule-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.time-block {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 1.1rem;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.time-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.time-block:hover {
    box-shadow: 0 12px 30px rgba(0, 212, 255, 0.2);
    transform: translateX(4px);
    border-color: var(--primary-color);
}

.time-block:hover::before {
    opacity: 1;
}

.time-block.past {
    opacity: 0.5;
    background: rgba(26, 31, 58, 0.3);
}

.time-block.present {
    border-left-color: var(--danger-color);
    background: rgba(255, 56, 96, 0.1);
    border-color: rgba(255, 56, 96, 0.3);
}

.time-block.present:hover {
    box-shadow: 0 12px 30px rgba(255, 56, 96, 0.2);
}

.time-block.future {
    border-left-color: var(--success-color);
}

.time-block.future:hover {
    box-shadow: 0 12px 30px rgba(0, 255, 136, 0.2);
}

.time-block.completed {
    opacity: 0.6;
    text-decoration: line-through;
    background: rgba(26, 31, 58, 0.2);
}

.time-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

.time-block-time {
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1rem;
}

.time-block-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.time-block.work .time-block-category {
    background: rgba(66, 153, 225, 0.15);
    color: #4299e1;
    border-color: rgba(66, 153, 225, 0.3);
}

.time-block.personal .time-block-category {
    background: rgba(0, 255, 136, 0.15);
    color: var(--success-color);
    border-color: rgba(0, 255, 136, 0.3);
}

.time-block.meeting .time-block-category {
    background: rgba(255, 183, 0, 0.15);
    color: var(--warning-color);
    border-color: rgba(255, 183, 0, 0.3);
}

.time-block.important .time-block-category {
    background: rgba(255, 56, 96, 0.15);
    color: var(--danger-color);
    border-color: rgba(255, 56, 96, 0.3);
}

.time-block-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 0.4rem;
    position: relative;
    z-index: 1;
}

.time-block-details {
    font-size: 0.85rem;
    color: var(--text-lighter);
    margin-bottom: 0.6rem;
    position: relative;
    z-index: 1;
}

.time-block-priority {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    margin-right: 0.4rem;
    position: relative;
    z-index: 1;
}

.priority-high {
    background: rgba(255, 56, 96, 0.2);
    color: var(--danger-color);
}

.priority-medium {
    background: rgba(255, 183, 0, 0.2);
    color: var(--warning-color);
}

.priority-low {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success-color);
}

.time-block-actions {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.75rem;
    position: relative;
    z-index: 1;
}

.time-block-actions button {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    transition: var(--transition);
}

.time-block-actions .btn-complete {
    color: var(--success-color);
}

.time-block-actions .btn-complete:hover {
    background: rgba(0, 255, 136, 0.15);
}

.time-block-actions .btn-edit {
    color: var(--info-color);
}

.time-block-actions .btn-edit:hover {
    background: rgba(0, 212, 255, 0.15);
}

.time-block-actions .btn-delete {
    color: var(--danger-color);
}

.time-block-actions .btn-delete:hover {
    background: rgba(255, 56, 96, 0.15);
}

/* Checkbox */
.task-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin-right: 0.5rem;
    accent-color: var(--primary-color);
}

/* Upcoming List */
#upcomingList {
    max-height: 300px;
    overflow-y: auto;
}

.upcoming-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.upcoming-item:last-child {
    border-bottom: none;
}

.upcoming-time {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.8rem;
}

.upcoming-task {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Notes Area */
#notesArea {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    font-family: 'Poppins', sans-serif;
    resize: vertical;
    background: rgba(26, 31, 58, 0.5);
    color: var(--text-light);
}

#notesArea:focus {
    border-color: var(--warning-color);
    background: rgba(26, 31, 58, 0.8);
    color: var(--text-light);
    box-shadow: 0 0 20px rgba(255, 183, 0, 0.2);
}

#notesArea::placeholder {
    color: var(--text-lighter);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d69e2e 100%);
    border: none;
    color: var(--dark-bg);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #d69e2e 0%, #c05621 100%);
    color: var(--dark-bg);
}

/* Modals */
.modal-content {
    border: none;
    border-radius: 16px;
    background: var(--card-bg);
    color: var(--text-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-title {
    font-weight: 700;
    color: var(--text-light);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

.close {
    color: var(--text-lighter);
    opacity: 0.8;
}

.close:hover {
    color: var(--primary-color);
    opacity: 1;
}

/* Badges */
.badge {
    padding: 0.4rem 0.7rem;
    font-weight: 700;
    border-radius: 20px;
    font-size: 0.7rem;
    border: 1px solid;
}

.badge-primary {
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary-color);
    border-color: rgba(0, 212, 255, 0.3);
}

.badge-info {
    background: rgba(0, 212, 255, 0.15);
    color: var(--info-color);
    border-color: rgba(0, 212, 255, 0.3);
}

.badge-success {
    background: rgba(0, 255, 136, 0.15);
    color: var(--success-color);
    border-color: rgba(0, 255, 136, 0.3);
}

.badge-warning {
    background: rgba(255, 183, 0, 0.15);
    color: var(--warning-color);
    border-color: rgba(255, 183, 0, 0.3);
}

.badge-danger {
    background: rgba(255, 56, 96, 0.15);
    color: var(--danger-color);
    border-color: rgba(255, 56, 96, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1rem;
    }

    .header-section {
        padding: 1.5rem 0;
    }

    .header-section h1 {
        font-size: 1.75rem;
    }

    .weather-widget {
        margin-top: 1rem;
    }

    .main-content {
        margin-top: 0;
    }

    .sidebar {
        margin-bottom: 1rem;
    }

    .category-btn {
        font-size: 0.85rem;
        padding: 0.7rem 0.85rem;
    }

    .time-block {
        padding: 0.95rem;
    }

    .time-block-title {
        font-size: 0.95rem;
    }

    .time-block-time {
        font-size: 0.9rem;
    }

    .time-block-category {
        font-size: 0.65rem;
        padding: 0.25rem 0.6rem;
    }

    .time-block-actions {
        gap: 0.3rem;
    }

    .time-block-actions button {
        padding: 0.35rem 0.5rem;
        font-size: 0.75rem;
    }

    .card-body {
        padding: 1rem;
    }

    .form-group {
        margin-bottom: 0.75rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: 0.7rem 1rem;
    }

    .badge {
        font-size: 0.65rem;
        padding: 0.3rem 0.55rem;
    }
}

@media (max-width: 576px) {
    :root {
        --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }

    .navbar {
        padding: 0.75rem 0;
    }

    .navbar-brand {
        font-size: 0.95rem;
    }

    .nav-link {
        margin-left: 1rem;
        font-size: 0.9rem;
    }

    .header-section {
        padding: 1.25rem 0;
    }

    .header-section h1 {
        font-size: 1.4rem;
    }

    .header-section .lead {
        font-size: 0.85rem;
    }

    .weather-widget {
        padding: 1rem;
        border-radius: 14px;
    }

    .temperature {
        font-size: 1.6rem;
    }

    .weather-icon {
        font-size: 2rem;
    }

    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .card {
        border-radius: 12px;
    }

    .card-header {
        padding: 1rem;
        font-size: 0.95rem;
    }

    .card-body {
        padding: 0.9rem;
    }

    .card-title {
        font-size: 0.95rem;
    }

    .category-btn {
        font-size: 0.8rem;
        padding: 0.65rem 0.75rem;
        margin-bottom: 0.4rem;
    }

    .category-btn i {
        margin-right: 0.5rem;
    }

    .time-block {
        padding: 0.85rem;
        border-radius: 12px;
        margin-bottom: 0.5rem;
    }

    .time-block-header {
        margin-bottom: 0.6rem;
        gap: 0.5rem;
    }

    .time-block-time {
        font-size: 0.85rem;
    }

    .time-block-title {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    .time-block-details {
        font-size: 0.75rem;
        margin-bottom: 0.4rem;
    }

    .time-block-category {
        font-size: 0.6rem;
        padding: 0.2rem 0.5rem;
    }

    .time-block-priority {
        font-size: 0.65rem;
        padding: 0.25rem 0.5rem;
    }

    .time-block-actions {
        gap: 0.25rem;
        flex-wrap: wrap;
    }

    .time-block-actions button {
        padding: 0.3rem 0.45rem;
        font-size: 0.7rem;
    }

    .form-control {
        padding: 0.7rem 0.9rem;
        font-size: 0.9rem;
    }

    .form-group label {
        font-size: 0.8rem;
    }

    .btn-primary,
    .btn-warning {
        padding: 0.65rem 1.2rem;
        font-size: 0.85rem;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1.2rem;
    }

    .modal-title {
        font-size: 1.1rem;
    }

    .btn {
        font-size: 0.85rem;
        padding: 0.6rem 0.9rem;
    }

    .btn-block {
        width: 100%;
    }

    .badge {
        font-size: 0.6rem;
        padding: 0.25rem 0.5rem;
    }

    #upcomingList {
        max-height: 250px;
    }

    .upcoming-time {
        font-size: 0.75rem;
    }

    .upcoming-task {
        font-size: 0.8rem;
    }

    .stat-item {
        padding: 0.6rem 0;
    }

    .stat-item span {
        font-size: 0.8rem;
    }

    .stat-item strong {
        font-size: 1rem;
    }

    .add-task-card {
        margin-bottom: 1.5rem;
    }

    .add-task-card .card-body {
        padding: 1rem;
    }

    .schedule-container {
        gap: 0.5rem;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
    }
    50% {
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
    }
}

.time-block {
    animation: slideIn 0.3s ease-out;
}

.card {
    animation: fadeIn 0.4s ease-out;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--darker-bg);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 212, 255, 0.3);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 212, 255, 0.5);
}

/* Stats */
.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item span {
    color: var(--text-lighter);
    font-size: 0.85rem;
}

.stat-item strong {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Add Task Card */
.add-task-card {
    margin-bottom: 1.5rem;
}

.add-task-card .card-body {
    padding: 1.3rem;
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .add-task-card,
    .sidebar {
        display: none;
    }

    .time-block {
        page-break-inside: avoid;
    }

    body {
        background: white;
    }

    .card,
    .time-block {
        background: white;
        color: black;
    }
}