/* Hide scrollbars but keep scrolling functionality */
* {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

*::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

/* Mobile landscape warning */
@media (max-width: 645px) and (orientation: portrait) {
    .mobile-warning {
        display: flex !important;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: black;
        color: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        z-index: 99999;
        font-size: 24px;
        text-align: center;
        padding: 20px;
    }
    
    .mobile-warning i {
        font-size: 48px;
        margin-bottom: 20px;
        color: #ff0000;
        animation: spin 2s linear infinite;
    }
    
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
}

.mobile-warning {
    display: none;
}

:root {
    --primary-bg: #000000;
    --primary-text: #ffffff;
    --routine-width: 66.66%;
    --notebook-width: 33.33%;
    --border-color: #333333;
    --accent-color: #4a6fa5;
    --checked-color: #2e7d32;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --lecture-color: #0066cc;
    --tutorial-color: #00aa00;
    --lab-color: #ff9900;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--primary-bg);
    color: var(--primary-text);
    min-height: 100vh;
    overflow-x: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: #111;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-text);
}

.controls {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 8px 16px;
    background-color: #222;
    color: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.btn:hover {
    background-color: #333;
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-primary:hover {
    background-color: #5a8bd5;
}

.btn-danger {
    background-color: var(--error-color);
    border-color: var(--error-color);
}

.btn-danger:hover {
    background-color: #f6685e;
}

.container {
    display: flex;
    height: calc(100vh - 70px);
}

/* Routine Section */
.routine-container {
    width: var(--routine-width);
    padding: 20px;
    overflow-y: auto;
}

.view-controls {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.date-navigation {
    display: flex;
    align-items: center;
    gap: 10px;
}

.current-date {
    font-size: 18px;
    font-weight: 600;
}

/* Schedule Grid - Compact Version */
.schedule-grid-compact {
    display: grid;
    grid-template-columns: 70px repeat(5, 1fr);
    gap: 1px;
    background: #222;
    border: 1px solid #333;
    border-radius: 6px;
    overflow: hidden;
    margin-top: 20px;
    font-size: 11px;
}

.time-slot-compact {
    background: #000;
    padding: 6px 4px;
    text-align: center;
    font-weight: 600;
    color: #fff;
    min-height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid #333;
}

.day-header-compact {
    background: #222;
    padding: 8px 4px;
    text-align: center;
    font-weight: 600;
    color: #fff;
}

.schedule-cell-compact {
    background: #111;
    min-height: 30px;
    border: 1px solid #333;
    position: relative;
}

.class-block-compact {
    position: absolute;
    left: 1px;
    right: 1px;
    padding: 4px;
    border-radius: 3px;
    color: white;
    font-size: 10px;
    overflow: hidden;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.lecture {
    background: var(--lecture-color);
    border-left: 3px solid #004488;
}

.tutorial {
    background: var(--tutorial-color);
    border-left: 3px solid #008800;
}

.lab {
    background: var(--lab-color);
    border-left: 3px solid #cc7700;
}

.class-info-compact {
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 1px;
}

.class-room-compact {
    font-size: 9px;
    opacity: 0.9;
}

.legend {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

/* Week View */
.week-view {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.day-column {
    background-color: #111;
    border-radius: 8px;
    padding: 10px;
    min-height: 500px;
    border: 1px solid var(--border-color);
}

.day-header {
    text-align: center;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.today {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(74, 111, 165, 0.3);
}

.task-box {
    padding: 8px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 13px;
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    color: #000;
    font-weight: 500;
    overflow: hidden;
}

.task-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.task-time {
    font-size: 11px;
    opacity: 0.8;
    margin-bottom: 2px;
}

.task-check {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
}

.task-check.checked {
    background-color: var(--checked-color);
    color: white;
}

.task-delete {
    position: absolute;
    top: 5px;
    right: 30px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 2;
}

.task-box:hover .task-delete {
    opacity: 1;
}

.task-delete:hover {
    background-color: var(--error-color);
    color: white;
}

/* Day View */
.day-view {
    margin-top: 20px;
}

.time-slot {
    display: flex;
    margin-bottom: 15px;
    border-bottom: 1px solid #222;
    padding-bottom: 15px;
}

.time-label {
    width: 100px;
    font-weight: 600;
    color: #aaa;
}

.day-tasks {
    flex: 1;
}

/* Notebook Section */
.notebook-container {
    width: var(--notebook-width);
    padding: 20px;
    border-left: 1px solid var(--border-color);
    background-color: #0a0a0a;
    overflow-y: auto;
}

.notebook-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.notebook-title {
    font-size: 20px;
    font-weight: 700;
}

.bookmarks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.bookmark {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    font-weight: 500;
}

.bookmark:hover {
    transform: translateY(-2px);
}

.bookmark.active {
    border-color: white;
}

.notebook-section {
    background-color: #111;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    display: none;
}

.notebook-section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #333;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
}

.note-item {
    margin-bottom: 15px;
    padding: 10px;
    background-color: #1a1a1a;
    border-radius: 6px;
    display: flex;
    align-items: flex-start;
}

.note-checkbox {
    margin-right: 10px;
    margin-top: 3px;
}

.note-text {
    flex: 1;
    line-height: 1.5;
}

.note-text.checked {
    text-decoration: line-through;
    color: #888;
}

.add-note {
    display: flex;
    margin-top: 15px;
}

.note-input {
    flex: 1;
    padding: 10px;
    background-color: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px 0 0 6px;
    color: white;
}

.add-note-btn {
    padding: 10px 15px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    display: none;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: #111;
    border-radius: 10px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    border: 1px solid var(--border-color);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    margin-bottom: 20px;
    font-size: 22px;
    font-weight: 600;
    text-align: center;
}

.form-group {
    margin-bottom: 15px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: #ccc;
}

.form-input {
    width: 100%;
    padding: 10px;
    background-color: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    color: white;
}

.color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.color-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.color-option.selected {
    border-color: white;
    transform: scale(1.1);
}

.day-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.day-checkbox {
    display: flex;
    align-items: center;
    gap: 5px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 10px;
    padding: 10px;
    background-color: rgba(244, 67, 54, 0.1);
    border-radius: 6px;
    display: none;
}

.error-message.show {
    display: block;
}

.warning-message {
    color: var(--warning-color);
    font-size: 14px;
    margin-top: 10px;
    padding: 10px;
    background-color: rgba(255, 152, 0, 0.1);
    border-radius: 6px;
    display: none;
}

.warning-message.show {
    display: block;
}

.conflict-info {
    margin-top: 10px;
    font-size: 12px;
    color: #aaa;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 8px;
    border-radius: 4px;
}

/* Confirmation Modal */
.confirmation-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.confirmation-modal.active {
    display: flex;
}

.confirmation-content {
    background-color: #111;
    border-radius: 10px;
    padding: 30px;
    width: 90%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.confirmation-text {
    margin-bottom: 20px;
    font-size: 16px;
}

.confirmation-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Responsive */
@media (max-width: 1024px) {
    .container {
        flex-direction: column;
    }
    
    .routine-container, .notebook-container {
        width: 100%;
    }
    
    .notebook-container {
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}