/* --- 1. DEFINE ALL YOUR COLORS (YOUR "THEME") HERE --- */
:root {
    --bg-page: #0d1117;
    --bg-header: #161b22;
    --bg-column: #161b22;
    --bg-form: #21262d;
    --bg-input: #0d1117;
    --bg-drag-over: #21262d;
    --bg-drag-over-rgba: rgba(255, 255, 255, 0.05);

    --text-primary: #e6edf3;
    --text-secondary: #848d97;
    --text-placeholder: #484f58;

    --border-light: #30363d;
    --border-focus: #1f6feb;

    --btn-primary-bg: #238636;
    --btn-primary-hover: #2ea043;
    --btn-primary-text: #ffffff;

    --btn-delete-bg: #490000;
    --btn-delete-hover: #b30000;
    --btn-delete-text: #f0a0a0;

    --btn-secondary-bg: #30363d;
    --btn-secondary-hover: #484f58;
    --btn-secondary-border: #484f58;
    --btn-secondary-text: #e6edf3;

    /* (Dark, desaturated versions for a dark theme) */
    --priority-high-bg: #5c2b2b;
    /* Dark Red */
    --priority-medium-bg: #614a19;
    /* Dark Orange/Amber */
    --priority-low-bg: #223a5e;
    /* Dark Blue */

    /* Text colors for contrast on priority BGs */
    --priority-high-text: #ffc2c2;
    --priority-medium-text: #ffe0b3;
    --priority-low-text: #c2d8ff;
}

/* -------------------------------------------------- */
/* --- 2. GLOBAL STYLES --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    margin: 0;
    min-height: 100vh;
    /* Ensure body takes full height */
    overflow-x: hidden;
    /* Prevent horizontal scrolling */
}

/* Ensure html and body don't cause overflow */
html,
body {
    max-width: 100%;
}


/* -------------------------------------------------- */
/* --- 3. HEADER & FOOTER --- */
.main-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-light);
    padding: 16px 24px;
    display: flex;
    flex-wrap: wrap;
    /* Allow header items to wrap on very small screens */
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    /* Add gap for wrapped items */
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    font-weight: bold;
    font-size: 18px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    flex-shrink: 0;
    /* Prevent logo shrinking */
}

.header-title {
    flex-shrink: 0;
    /* Prevent title shrinking */
}

.header-title h1 {
    font-size: 18px;
    margin: 0;
    color: var(--text-primary);
}

.header-title p {
    font-size: 14px;
    margin: 0;
    color: var(--text-secondary);
    white-space: nowrap;
}

.header-right {
    flex-grow: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
    min-width: 200px;
    /* Ensure some space for right elements */
}

#search-bar {
    background-color: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 14px;
    width: 100%;
    /* Make search fill available space */
    max-width: 400px;
    /* But limit its max width */
    box-sizing: border-box;
}

#search-bar::placeholder {
    color: var(--text-placeholder);
}

#search-bar:focus {
    outline: 2px solid var(--border-focus);
    border-color: var(--border-focus);
}

#user-email-display {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    /* Prevent email wrapping */
    overflow: hidden;
    text-overflow: ellipsis;
    /* Add ... if email is too long */
    max-width: 150px;
    /* Limit email display width */
}

#logout-button {
    background: none;
    border: 1px solid var(--btn-secondary-border);
    color: var(--btn-secondary-text);
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    /* Prevent button text wrapping */
    flex-shrink: 0;
}

#logout-button:hover {
    background-color: var(--btn-secondary-hover);
}


.main-footer {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    /* Allow wrapping */
    padding: 16px 24px;
    font-size: 12px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-light);
    gap: 10px;
}

/* -------------------------------------------------- */
/* --- 4. MAIN CONTENT & FORM --- */
.content-container {
    padding: 24px;
}

.add-task-container {
    background-color: var(--bg-form);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    /* Allow form elements to wrap */
    gap: 16px;
    align-items: flex-end;
    /* Keep bottom alignment */
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
    /* Allow groups to grow */
    min-width: 120px;
    /* Minimum width before wrapping */
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    height: 38px;
    resize: none;
    box-sizing: border-box;
    /* Include padding/border in height */
    width: 100%;
    /* Make inputs fill their container */
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-placeholder);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: 2px solid var(--border-focus);
    border-color: var(--border-focus);
}

/* Adjust flex-grow for better wrapping behavior */
.form-group-title {
    flex-basis: 200px;
}

.form-group-description {
    flex-basis: 300px;
}

.form-group-priority {
    flex-basis: 120px;
    flex-grow: 0;
}

/* Don't let priority grow too much */

.add-task-btn {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    height: 38px;
    flex-shrink: 0;
    /* Prevent button shrinking */
}

.add-task-btn:hover {
    background-color: var(--btn-primary-hover);
}

/* --- Priority Dropdown Colors --- */
#task-priority option {
    color: var(--text-primary);
    background-color: var(--bg-input);
}

#task-priority option[value="low"] {
    background-color: var(--priority-low-bg) !important;
}

#task-priority option[value="medium"] {
    background-color: var(--priority-medium-bg) !important;
}

#task-priority option[value="high"] {
    background-color: var(--priority-high-bg) !important;
}

#task-priority.select-low {
    background-color: var(--priority-low-bg);
}

#task-priority.select-medium {
    background-color: var(--priority-medium-bg);
}

#task-priority.select-high {
    background-color: var(--priority-high-bg);
}


/* -------------------------------------------------- */
/* --- 5. BOARD & TASK CARDS --- */
.board-container {
    display: grid;
    /* Default to 3 columns */
    grid-template-columns: repeat(3, minmax(280px, 1fr));
    /* Use minmax for flexibility */
    gap: 24px;
}

.tasks-column {
    background-color: var(--bg-column);
    border-radius: 8px;
    border: 1px solid var(--border-light);
    display: flex;
    /* Use flex for column content */
    flex-direction: column;
    /* Stack header and list vertically */
}

.tasks-column h2 {
    font-size: 16px;
    padding: 16px;
    margin: 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    flex-shrink: 0;
    /* Prevent header shrinking */
}

.task-count {
    font-size: 14px;
    background-color: var(--bg-input);
    padding: 2px 8px;
    border-radius: 10px;
    color: var(--text-secondary);
}

.tasks-list {
    min-height: 200px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-radius: 0 0 8px 8px;
    transition: background-color 0.2s ease;
    overflow-y: auto;
    /* Add scroll if list gets too long */
    flex-grow: 1;
    /* Allow list to fill column height */
}

.tasks-list.drag-over {
    background-color: var(--bg-drag-over-rgba);
}

.task-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    padding: 12px 16px;
    cursor: grab;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
    /* Prevent cards shrinking weirdly */
}

.task-card:hover {
    border-color: var(--border-focus);
}

.task-card.dragging {
    opacity: 0.5;
}

/* --- Card Background by Priority --- */
.task-card.priority-low {
    background-color: var(--priority-low-bg);
}

.task-card.priority-medium {
    background-color: var(--priority-medium-bg);
}

.task-card.priority-high {
    background-color: var(--priority-high-bg);
}

.task-card.priority-low p,
.task-card.priority-medium p,
.task-card.priority-high p {
    color: var(--text-primary);
    opacity: 0.8;
}

.task-card h4 {
    margin: 0;
    font-size: 16px;
    word-break: break-word;
}

/* Allow long titles to wrap */
.task-card p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
    word-break: break-word;
}

/* Allow descriptions to wrap */

/* --- Task Card Footer for Buttons --- */
.task-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.priority-tag {
    display: none;
}

.task-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    /* Allow buttons to wrap */
}

.move-btn,
.delete-btn {
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--btn-secondary-border);
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
}

.move-btn:hover {
    background-color: var(--btn-secondary-hover);
}

.delete-btn {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px;
    margin-left: auto;
}

.delete-btn:hover {
    background-color: var(--btn-delete-bg);
    color: var(--btn-delete-text);
}


/* -------------------------------------------------- */
/* --- 6. AUTHENTICATION SCREEN --- */
/* -------------------------------------------------- */

#auth-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
    box-sizing: border-box;
}

.auth-box {
    background-color: var(--bg-header);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 32px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.auth-title {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 24px;
}

.auth-form h3 {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: 0;
    margin-bottom: 24px;
}

.auth-form input[type="email"],
.auth-form input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text-primary);
    margin-bottom: 16px;
    box-sizing: border-box;
}

.auth-form input[type="email"]:focus,
.auth-form input[type="password"]:focus {
    outline: 2px solid var(--border-focus);
    border-color: var(--border-focus);
}

.auth-form button {
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 16px;
}

.auth-form button:hover {
    background-color: var(--btn-primary-hover);
}

#auth-error {
    color: var(--btn-danger-text);
    background-color: var(--btn-danger-bg);
    border: 1px solid var(--btn-danger-border);
    padding: 10px;
    border-radius: 6px;
    text-align: center;
    font-size: 14px;
    display: none;
}

.auth-toggle {
    font-size: 14px;
    text-align: center;
    color: var(--text-secondary);
    margin: 0;
}

.auth-toggle a {
    color: var(--border-focus);
    text-decoration: none;
    font-weight: 600;
}

.auth-toggle a:hover {
    text-decoration: underline;
}

/* -------------------------------------------------- */
/* --- 7. RESPONSIVE DESIGN (Media Queries) --- */
/* -------------------------------------------------- */

/* Medium screens (tablets, smaller desktops) */
@media (max-width: 992px) {
    .board-container {
        /* Change to 2 columns */
        grid-template-columns: repeat(2, minmax(280px, 1fr));
    }

    .form-group-title {
        flex-basis: 150px;
    }

    /* Allow title to shrink a bit */
    .form-group-description {
        flex-basis: 250px;
    }

    /* Allow description to shrink */
    #search-bar {
        max-width: 300px;
    }
}

/* Small screens (large phones, small tablets) */
@media (max-width: 768px) {
    .board-container {
        /* Change to 1 column */
        grid-template-columns: minmax(280px, 1fr);
    }

    .main-header {
        padding: 12px 16px;
    }

    .content-container {
        padding: 16px;
    }

    .add-task-container {
        padding: 12px;
    }

    .header-right {
        min-width: auto;
        /* Allow right side to shrink more */
    }

    #search-bar {
        min-width: 150px;
        max-width: none;
        flex-grow: 1;
    }

    /* Let search grow */
    .form-group-title,
    .form-group-description,
    .form-group-priority {
        flex-basis: 100%;
        /* Make form inputs full width */
    }

    .add-task-btn {
        width: 100%;
        /* Make button full width */
    }
}

/* Extra small screens (phones) */
@media (max-width: 576px) {
    .main-header {
        flex-direction: column;
        align-items: flex-start;
    }

    /* Stack header items */
    .header-right {
        width: 100%;
        justify-content: space-between;
    }

    /* Space out search/logout */
    .header-title p {
        display: none;
    }

    /* Hide subtitle on very small screens */
    #user-email-display {
        max-width: 100px;
    }

    /* Shrink email display */
    .auth-box {
        padding: 24px;
    }

    .main-footer {
        justify-content: center;
        text-align: center;
    }

    /* Center footer text */
}