/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --accent-color: #4cc9f0;
    --success-color: #4CAF50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f5f7ff;
    color: var(--dark-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
}

.back-link {
    position: absolute;
    left: 20px;
    top: 20px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.back-link:hover {
    background: rgba(255, 255, 255, 0.3);
}

header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.date-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-top: 15px;
    font-size: 1.2rem;
    font-weight: 500;
}

#current-time {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 50px;
}

/* Main Layout */
.app-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    margin-bottom: 40px;
}

@media (max-width: 992px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
}

/* Form Styles */
.task-form-container {
    background-color: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.task-form-container h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    font-family: 'Roboto', sans-serif;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.time-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

/* Button Styles */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Roboto', sans-serif;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    flex: 2;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(67, 97, 238, 0.2);
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--dark-color);
    flex: 1;
}

.btn-secondary:hover {
    background-color: #dde1e7;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #e68900;
}

/* Schedule Container */
.schedule-container {
    background-color: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.schedule-header h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.schedule-actions {
    display: flex;
    gap: 10px;
}

.current-time-indicator {
    background-color: #e3f2fd;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: var(--primary-color);
}

/* Timeline */
.timeline {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--light-gray);
    margin-bottom: 20px;
    overflow-x: auto;
}

.timeline-hour {
    text-align: center;
    padding: 5px;
    min-width: 60px;
    font-weight: 500;
    color: var(--gray-color);
}

.timeline-hour.current {
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
}

.timeline-hour.current::after {
    content: '';
    position: absolute;
    bottom: -11px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

/* Task Items */
.tasks-container {
    position: relative;
    min-height: 400px;
}

.task-item {
    background-color: white;
    border-left: 5px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: 18px;
    margin-bottom: 15px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.task-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.task-item.upcoming {
    border-left-color: var(--primary-color);
}

.task-item.ongoing {
    border-left-color: var(--accent-color);
    background-color: rgba(76, 201, 240, 0.05);
}

.task-item.completed {
    border-left-color: var(--success-color);
    background-color: rgba(76, 175, 80, 0.05);
    opacity: 0.9;
}

.task-time {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
    min-width: 180px;
}

.task-title {
    font-size: 1.2rem;
    font-weight: 500;
    flex: 1;
    min-width: 200px;
}

.task-status {
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: capitalize;
}

.task-status.upcoming {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

.task-status.ongoing {
    background-color: rgba(76, 201, 240, 0.1);
    color: var(--accent-color);
}

.task-status.completed {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.task-actions {
    display: flex;
    gap: 10px;
}

.task-actions button {
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.edit-btn:hover {
    background-color: rgba(67, 97, 238, 0.1);
}

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

.delete-btn:hover {
    background-color: rgba(244, 67, 54, 0.1);
}

/* No Tasks State */
.no-tasks {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-color);
}

.no-tasks i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--light-gray);
}

.no-tasks h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    font-weight: 500;
}

/* Error Message */
.error-message {
    background-color: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
    padding: 12px 15px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    display: none;
    align-items: center;
    gap: 10px;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: white;
    width: 90%;
    max-width: 500px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.modal-header {
    padding: 20px 25px;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.close-modal {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.close-modal:hover {
    transform: scale(1.2);
}

.modal-body {
    padding: 25px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    color: var(--gray-color);
    border-top: 1px solid var(--light-gray);
}

.storage-info {
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .date-display {
        flex-direction: column;
        gap: 10px;
    }
    
    .time-inputs {
        grid-template-columns: 1fr;
    }
    
    .task-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .task-actions {
        align-self: flex-end;
    }
    
    .schedule-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .schedule-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* Current Time Highlight */
.current-time-line {
    position: absolute;
    width: 100%;
    height: 3px;
    background-color: var(--danger-color);
    z-index: 5;
    pointer-events: none;
}

.current-time-line::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 0;
    width: 13px;
    height: 13px;
    background-color: var(--danger-color);
    border-radius: 50%;
}

/* Keyboard Focus Styles */
input:focus-visible,
button:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}