/* Using the same color variables as previous pages */
:root {
    --background-black: #0A0A0C;
    --panel-background: #1C1C1E;
    --text-color-primary: #FFFFFF;
    --text-color-secondary: #AEAEB2;
    --border-color: #3A3A3C;
    --gradient-purple: #5856d6; /* Indigo/Purple */
    --gradient-blue: #007AFF; /* Blue */
    --button-primary: #007AFF;
    --button-secondary: #3A3A3C;
    --button-text: #FFFFFF;

    /* Course Colors (Aesthetic Palette) */
    --course-color-1: #FFD700; /* Gold */
    --course-color-2: #FF6347; /* Tomato */
    --course-color-3: #4682B4; /* SteelBlue */
    --course-color-4: #9370DB; /* MediumPurple */
    --course-color-5: #32CD32; /* LimeGreen */
    --course-color-6: #FF8C00; /* DarkOrange */
    --course-color-7: #20B2AA; /* LightSeaGreen */
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--background-black);
    color: var(--text-color-primary);
    min-height: 100vh;
    position: relative;
    padding-bottom: 50px;
    overflow-x: hidden;
}

.background-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top left, var(--gradient-purple) 0%, transparent 25%),
                radial-gradient(circle at bottom right, var(--gradient-blue) 0%, transparent 25%);
    opacity: 0.15;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 5;
}

header {
    padding: 20px;
    display: flex;
    justify-content: flex-end;
    position: relative;
    z-index: 10;
}

.header-content {
    display: flex;
    align-items: center;
}

.clock {
    font-size: 1rem;
    color: var(--text-color-secondary);
    background-color: rgba(28, 28, 30, 0.6);
    padding: 8px 15px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.timetable-app-container h1 {
    font-size: 2.5em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
}

.timetable-app-container p {
    font-size: 1.1em;
    color: var(--text-color-secondary);
    text-align: center;
    margin-bottom: 40px;
}

.timetable-input-section,
.timetable-display-section,
.notification-settings-section {
    background-color: var(--panel-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
}

.timetable-input-section h2,
.timetable-display-section h2,
.notification-settings-section h2 {
    font-size: 1.8em;
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--text-color-primary);
}

.day-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive grid for days */
    gap: 20px;
}

.day-input-block {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.day-input-block h3 {
    font-size: 1.3em;
    margin: 0 0 10px 0;
    color: var(--text-color-primary);
}

.courses-for-day {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.course-input-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto; /* Name, Start, End, Remove */
    gap: 10px;
    align-items: center;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.course-input-row input[type="text"],
.course-input-row input[type="time"] {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: #2C2C2E;
    color: var(--text-color-primary);
    font-size: 0.9em;
    box-sizing: border-box;
}

.course-input-row input::placeholder {
    color: var(--text-color-secondary);
    opacity: 0.7;
}

.remove-course-btn {
    background-color: #FF3B30;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
    line-height: 1;
}

.remove-course-btn:hover {
    background-color: #CC0000;
}

.add-course-btn {
    align-self: flex-start; /* Align button to the start */
    margin-top: 5px;
}

.action-button {
    border: none;
    border-radius: 8px;
    padding: 15px 30px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
    color: var(--button-text);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.action-button.primary {
    background-color: var(--button-primary);
}

.action-button.primary:hover {
    background-color: #0056b3;
}

.action-button.secondary {
    background-color: var(--button-secondary);
}

.action-button.secondary:hover {
     background-color: #4A4A4C;
}

.action-button.small {
    padding: 8px 12px;
    font-size: 0.9em;
}

#save-timetable-btn {
    display: block;
    width: 100%;
    margin-top: 30px;
}

/* Updated styles for the timetable display to stack days */
.timetable-grid {
    display: flex; /* Use flexbox */
    flex-direction: column; /* Stack items vertically */
    gap: 20px; /* Space between day blocks */
}

.day-column {
    background-color: #2C2C2E;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    animation: fadeIn 0.3s ease-out;
    width: 100%; /* Take full width */
    box-sizing: border-box; /* Include padding in width */
}

.day-column h3 {
    font-size: 1.2em;
    margin: 0 0 5px 0;
    color: var(--text-color-primary);
    text-align: left; /* Align day name to the left */
}

.course-entry {
    background-color: var(--card-background);
    border-left: 5px solid;
    border-radius: 6px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.9em;
    color: var(--text-color-secondary);
}

.course-entry .course-name {
    font-weight: 600;
    color: var(--text-color-primary);
    word-break: break-word; /* Allow long course names to wrap */
}

.course-entry .course-time {
    font-size: 0.8em;
    word-break: break-word; /* Allow long time strings to wrap if necessary */
}

.no-timetable-message {
    text-align: center;
    color: var(--text-color-secondary);
    margin-top: 20px;
    /* Removed grid-column span as it's not a grid anymore */
}

.notification-settings-section p {
    font-size: 1em;
    color: var(--text-color-secondary);
    margin-bottom: 15px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header {
        padding: 15px;
    }

    .clock {
        font-size: 0.9rem;
        padding: 6px 12px;
    }

    .timetable-app-container h1 {
        font-size: 2em;
    }

    .timetable-app-container p {
        font-size: 1em;
        margin-bottom: 30px;
    }

    .timetable-input-section,
    .timetable-display-section,
    .notification-settings-section {
        padding: 15px;
    }

    .timetable-input-section h2,
    .timetable-display-section h2,
    .notification-settings-section h2 {
        font-size: 1.5em;
    }

    .day-inputs {
        grid-template-columns: 1fr; /* Stack day inputs on small screens */
        gap: 15px;
    }

    .day-input-block {
        padding: 10px;
    }

    .day-input-block h3 {
        font-size: 1.1em;
    }

    .courses-for-day {
         gap: 8px; /* Reduce gap between courses */
    }

    .course-input-row {
        grid-template-columns: 1fr auto; /* Stack name, time inputs, keep remove button */
        gap: 8px;
    }

     .course-input-row input[type="text"],
     .course-input-row input[type="time"] {
         grid-column: span 2; /* Make name and time inputs span both columns */
         font-size: 0.8em;
         padding: 8px;
     }

     /* Specific adjustment for time inputs to potentially share a row if desired,
        but stacking is simpler and more reliable on very small screens */
     /* If you wanted them side-by-side on small screens:
     .course-input-row input[type="time"] {
         grid-column: span 1;
     }
     */


    .remove-course-btn {
        padding: 6px 10px;
        font-size: 0.9em;
    }

    .add-course-btn {
        font-size: 0.8em;
        padding: 6px 10px;
    }

    .action-button.primary,
    .action-button.secondary {
        font-size: 1em;
        padding: 12px 20px;
    }

    #save-timetable-btn {
        margin-top: 20px;
    }

    /* Timetable display responsive adjustments */
    .timetable-grid {
        gap: 15px; /* Reduce gap between stacked days */
    }

    .day-column {
        padding: 10px;
        gap: 8px;
    }

    .day-column h3 {
        font-size: 1em;
        text-align: left; /* Ensure left alignment on small screens too */
    }

    .course-entry {
        padding: 8px;
        gap: 3px;
        font-size: 0.8em;
    }

    .course-entry .course-name {
        font-size: 0.9em;
    }

    .course-entry .course-time {
        font-size: 0.7em;
    }

    .notification-settings-section p {
        font-size: 0.9em;
    }

    #request-notification-permission-btn {
        font-size: 0.8em;
        padding: 6px 12px;
    }
}