/* Gemini Dark Theme Variables */
:root {
    --body-bg: #131314;
    --element-bg: #1E1F20;
    --element-bg-hover: #282A2C;
    --element-bg-inset: #1A1B1C;
    --glass-bg: rgba(30, 31, 32, 0.85);
    --border-color: #3C4043;
    --text-primary: #E8EAED;
    --text-secondary: #9AA0A6;
    --text-tertiary: #80868B;
    --focus-ring-color: #5F6368;

    --button-primary-bg: #3C4043;
    --button-primary-hover-bg: #4A4D50;
    --button-secondary-bg: #282A2C;
    --button-secondary-hover-bg: #3C4043;
    --button-danger-bg: #7D3030;
    --button-danger-hover-bg: #9E3F3F;

    /* --- CATEGORY COLORS --- */
    /* These are defaults, custom categories will use their own colors */
    --category-personal-bg: #3B82F6;
    --category-work-bg: #10B981;
    --category-learning-bg: #F59E0B;
    --category-health-bg: #EF4444;
    --category-shopping-bg: #8B5CF6;
    --category-appointments-bg: #F97316;
    --category-finance-bg: #14B8A6;
    --category-bills-bg: #1abc9c;
    --category-events-bg: #8e44ad;
    --category-birthday-bg: #fd79a8;
    --category-ideas-bg: #EC4899;
    --category-chores-bg: #95afc0;
    --category-social-bg: #e056fd;
    --category-urgent-bg: #ff3f34;
    --category-other-bg: #06B6D4;
    --category-text-color: #FFFFFF;

    --priority-high-color: #FAD2CF;
    --priority-medium-color: var(--text-secondary);
    --priority-low-color: #C4D7ED;

    --progress-bar-fill-bg: #5F6368;
    --progress-bar-track-bg: var(--element-bg-hover);
    --progress-bar-text-color: var(--text-primary);

    --icon-color: #9AA0A6;
    --notes-icon-color: #A079D4;
    --reminder-icon-color: #F59E0B;
    --history-icon-color: #63B47D;


    --toast-bg: #2E2F31;
    --toast-text-color: var(--text-primary);
    --toast-success-border: #63B47D;
    --toast-error-border: #DC2626;
    --toast-info-border: #75A1D0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--body-bg);
    color: var(--text-primary);
    overscroll-behavior-y: contain;
}
.dark-scrollbar::-webkit-scrollbar { width: 8px; }
.dark-scrollbar::-webkit-scrollbar-track { background: var(--element-bg); }
.dark-scrollbar::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
.dark-scrollbar::-webkit-scrollbar-thumb:hover { background: var(--focus-ring-color); }

.nav-item.active { background-color: var(--element-bg-hover); color: var(--text-primary); }
.nav-item:hover { background-color: var(--element-bg); }
.glassmorphism {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
}

.priority-high { color: var(--priority-high-color); font-weight: 500; }
.priority-medium { color: var(--priority-medium-color); }
.priority-low { color: var(--priority-low-color); }

.calendar-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.calendar-day {
    aspect-ratio: 1/1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 4px;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s, opacity 0.2s;
    border: 1px solid transparent;
    position: relative; /* For pseudo-element line */
}
.calendar-day:hover:not(.other-month):not(.passed-day) { background-color: var(--element-bg-hover); }
.calendar-day.today { border: 1px solid var(--focus-ring-color); font-weight: bold; }
.calendar-day.other-month { color: var(--text-tertiary); cursor: default; }
.calendar-day.selected-day { background-color: var(--focus-ring-color); color: var(--body-bg); }
.calendar-day.passed-day {
    color: var(--text-tertiary);
    opacity: 0.6;
    cursor: pointer; /* Allow clicking passed days */
}
.calendar-day.passed-day:not(.other-month)::before { /* Cross-out line */
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 141.4%; /* Approx sqrt(2) * 100% to span diagonal of a square */
    height: 1px; /* Line thickness */
    background-color: var(--text-tertiary); /* Use background for the line */
    transform-origin: center center; /* Ensure rotation is around the center */
    transform: translate(-50%, -50%) rotate(-45deg); /* Diagonal from top-left to bottom-right (\) */
    opacity: 0.7;
}
.calendar-day.passed-day.today {
    opacity: 0.8;
    border-color: var(--text-tertiary);
}
 .calendar-day.passed-day.selected-day {
    background-color: var(--focus-ring-color);
    color: var(--body-bg);
    opacity: 1;
}
.calendar-day.passed-day.selected-day::before {
    background-color: var(--body-bg);
}


.task-dot { width: 6px; height: 6px; border-radius: 50%; }
.task-indicator-container { display: flex; flex-wrap: wrap; justify-content: center; gap: 2px; margin-top: 3px; max-height: 14px; overflow: hidden; }

.custom-modal-backdrop { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.85); display: flex; justify-content: center; align-items: center; z-index: 100; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.custom-modal-backdrop.visible { opacity: 1; visibility: visible; }
.custom-modal-content { background-color: var(--element-bg); padding: 24px; border-radius: 0.75rem; width: 90%; max-width: 450px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3), 0 10px 10px -5px rgba(0,0,0,0.2); border: 1px solid var(--border-color); transform: scale(0.95); transition: transform 0.3s ease; }
.custom-modal-backdrop.visible .custom-modal-content { transform: scale(1); }
.custom-modal-title { font-size: 1.125rem; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.custom-modal-message { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.5; }
.custom-modal-buttons { display: flex; justify-content: flex-end; gap: 8px; }

/* Specific styles for Edit Task Modal content scrolling */
#editTaskModal .custom-modal-content {
    max-height: 85vh; /* Max height relative to viewport height */
    overflow-y: auto; /* Enable vertical scroll if content overflows */
}

#helpModal .custom-modal-content { max-width: 700px; }
#helpModal .help-content { max-height: 70vh; overflow-y: auto; }
#helpModal .help-content h4 { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-top: 1rem; margin-bottom: 0.5rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.25rem; }
#helpModal .help-content p { margin-bottom: 0.5rem; line-height: 1.6; }
#helpModal .help-content ul { list-style-type: disc; margin-left: 1.5rem; margin-bottom: 0.5rem; }
#helpModal .help-content code { background-color: var(--element-bg-inset); padding: 0.125rem 0.25rem; border-radius: 0.25rem; font-size: 0.8em; color: var(--text-secondary); }


input[type="text"], input[type="search"], input[type="date"], input[type="time"], input[type="number"], select, textarea {
    background-color: var(--element-bg); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 0.375rem; padding: 0.625rem;
}
input[type="text"]::placeholder, input[type="search"]::placeholder, input[type="date"]::placeholder, input[type="time"]::placeholder, input[type="number"]::placeholder, textarea::placeholder { color: var(--text-secondary); }
input[type="text"]:focus, input[type="search"]:focus, input[type="date"]:focus, input[type="time"]:focus, input[type="number"]:focus, select:focus, textarea:focus {
    outline: none; border-color: var(--focus-ring-color); box-shadow: 0 0 0 2px var(--focus-ring-color);
}
textarea { min-height: 60px; resize: vertical; }
select { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%239AA0A6' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); background-position: right 0.5rem center; background-repeat: no-repeat; background-size: 1.5em 1.5em; padding-right: 2.5rem; -webkit-appearance: none; -moz-appearance: none; appearance: none; }

/* Updated .form-checkbox styling */
.form-checkbox {
    appearance: none;
    background-color: var(--element-bg);
    border: 1px solid var(--border-color);
    padding: 0;
    display: inline-block;
    position: relative;
    width: 1.25em; /* Tailwind h-5 w-5 is 1.25rem, this makes it consistent if em is 16px */
    height: 1.25em;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
    flex-shrink: 0; /* Prevent shrinking in flex layouts */
}
.form-checkbox:checked {
    background-color: var(--focus-ring-color);
    border-color: var(--focus-ring-color);
}
.form-checkbox:checked::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23131314'%3E%3Cpath fill-rule='evenodd' d='M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.75.75 0 0 1 1.06-1.06L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z' clip-rule='evenodd'/%3E%3C/svg%3E");
    display: block;
    position: absolute;
    width: 100%; /* SVG will scale within this */
    height: 100%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.75); /* Adjust scale of SVG if needed */
}
.form-checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--focus-ring-color); /* Tailwind's ring-2 */
}


.btn { font-semibold py-2 px-4 rounded-lg text-sm transition duration-150 ease-in-out shadow-md focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-var(--body-bg) focus:ring-var(--focus-ring-color); color: var(--text-primary); }
.btn-primary { background-color: var(--button-primary-bg); } .btn-primary:hover { background-color: var(--button-primary-hover-bg); }
.btn-secondary { background-color: var(--button-secondary-bg); } .btn-secondary:hover { background-color: var(--button-secondary-hover-bg); }
.btn-danger { background-color: var(--button-danger-bg); color: var(--text-primary); } .btn-danger:hover { background-color: var(--button-danger-hover-bg); }
.btn-icon { background-color: var(--element-bg); color: var(--text-secondary); border-radius: 9999px; padding: 0.5rem; }
.btn-icon:hover { background-color: var(--element-bg-hover); color: var(--text-primary); }
.btn-sm { padding-top: 0.375rem; padding-bottom: 0.375rem; padding-left: 0.75rem; padding-right: 0.75rem; font-size: 0.75rem; }


.fa-tint { color: #75A1D0; } .fa-list-check { color: #63B47D; } .fa-calendar-alt { color: #A079D4; } .fa-chart-line { color: #F59E0B; }
.fa-comments { color: #F59E0B; }
.fa-sticky-note { color: var(--notes-icon-color); }
.fa-bell { color: var(--reminder-icon-color); }
.fa-history { color: var(--history-icon-color); }


.inset-bg { background-color: var(--element-bg-inset); border: 1px solid var(--border-color); }

#toast-container { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.toast { background-color: var(--toast-bg); color: var(--toast-text-color); padding: 12px 20px; border-radius: 0.5rem; box-shadow: 0 4px 6px rgba(0,0,0,0.2); font-size: 0.875rem; display: flex; align-items: center; gap: 10px; border-left-width: 4px; border-style: solid; opacity: 0; transform: translateY(20px); transition: opacity 0.3s ease, transform 0.3s ease; min-width: 250px; max-width: 90vw; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { border-left-color: var(--toast-success-border); }
.toast.error { border-left-color: var(--toast-error-border); }
.toast.info { border-left-color: var(--toast-info-border); }
.toast-icon { font-size: 1.1rem; }

.search-input-container { position: relative; }
.search-input-clear { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); color: var(--text-secondary); cursor: pointer; display: none; }
.search-input-clear:hover { color: var(--text-primary); }
input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration { -webkit-appearance:none; }

.water-progress-container { position: relative; background-color: var(--progress-bar-track-bg); }
.water-progress-text {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    z-index: 1;
    color: var(--progress-bar-text-color);
}

.profile-manager { display: flex; align-items: center; gap: 0.25rem; }
#profile-select { min-width: 100px; max-width: 150px; text-overflow: ellipsis; }
.profile-list-item { display: flex; justify-content: space-between; align-items: center; padding: 0.5rem 0; border-bottom: 1px solid var(--border-color); }
.profile-list-item:last-child { border-bottom: none; }

.subtask-list { margin-top: 0.5rem; padding-left: 1rem; space-y: 0.25rem; }
.subtask-item { display: flex; align-items: center; font-size: 0.875rem; color: var(--text-secondary); }
.subtask-item input[type="checkbox"] { margin-right: 0.5rem; }
.subtask-item .subtask-text.completed { text-decoration: line-through; opacity: 0.7; }
.subtask-item .subtask-text.agenda-item { font-style: italic; }
.subtask-agenda-item-icon { margin-right: 0.35rem; color: var(--icon-color); }

.subtask-controls { margin-left: auto; display: flex; align-items: center; }
.subtask-delete-btn, .subtask-move-btn {
    color: var(--text-tertiary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    margin-left: 0.25rem;
}
.subtask-delete-btn:hover, .subtask-move-btn:hover:not(:disabled) {
    color: var(--button-danger-hover-bg);
}
.subtask-move-btn:hover:not(:disabled) {
    color: var(--text-primary);
}
.subtask-move-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.subtask-indicator, .task-notes-indicator, .task-reminder-indicator {
    font-size: 0.75rem; color: var(--text-tertiary); margin-left: 0.5rem;
}
.task-notes-indicator i { color: var(--notes-icon-color); }
.task-reminder-indicator i { color: var(--reminder-icon-color); }


.recurring-task-icon { margin-left: 0.25rem; color: var(--text-tertiary); font-size: 0.8em; }
#recurrence-options, #task-reminder-options-add, #edit-task-reminder-options, #settings-hydration-reminder-options {
    display: none; margin-top: 0.5rem; padding-top: 0.5rem; border-top: 1px solid var(--border-color);
}
.empty-state-message { text-align: center; padding: 0.75rem; color: var(--text-secondary); font-style: italic; }
.reminder-options-grid { display: grid; grid-template-columns: 1fr auto; gap: 0.5rem; align-items: center; }

/* Notification History Styles */
#notification-history-list { max-height: 300px; overflow-y: auto; }
.notification-history-item {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.notification-history-item:last-child { border-bottom: none; }
.notification-history-item .timestamp { font-size: 0.7rem; color: var(--text-tertiary); display: block; margin-bottom: 0.25rem; }
.notification-history-item .task-text { font-weight: 500; color: var(--text-primary); }

/* Category Manager Styles */
.category-manager-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}
.category-manager-item:hover {
    background-color: var(--element-bg-hover);
}
.category-manager-item .category-name {
    flex-grow: 1;
    margin-left: 0.5rem;
    font-size: 0.875rem;
}
.category-manager-item input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 3rem; /* w-12 */
    height: 2rem; /* h-8 */
    background-color: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    border-radius: 0.25rem;
}
.category-manager-item input[type="color"]::-webkit-color-swatch {
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
}
.category-manager-item input[type="color"]::-moz-color-swatch {
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
}
.category-manager-item .btn-danger {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}