body {
    font-family: 'Jersey 10', sans-serif;
    font-size: 1.25rem;
}
/* --- THEME VARIABLES --- */
.light {
    --bg-main: #FFFFFF;
    --bg-secondary: #F3F4F6;
    --bg-input: #F9FAFB;
    --text-main: #000000;
    --text-secondary: #374151;
    --border-color: #D1D5DB;
    --mood-highlight: #e5e7eb;
    --cal-note-bg: #E5E7EB;
    --cal-note-text: #1F2937;
    --cal-task-bg: #D1D5DB; /* Slightly different grey */
    --cal-task-text: #1F2937;
    --accent-color: #000000;
}
.dark {
    --bg-main: #000000;
    --bg-secondary: #111111;
    --bg-input: #1F1F1F;
    --text-main: #FFFFFF;
    --text-secondary: #A0A0A0;
    --border-color: #2F2F2F;
    --mood-highlight: #3F3F3F;
    --cal-note-bg: #2F2F2F;
    --cal-note-text: #E0E0E0;
    --cal-task-bg: #1F1F1F;
    --cal-task-text: #E0E0E0;
    --accent-color: #FFFFFF;
}

/* --- GENERAL & LAYOUT --- */
.view {
    display: none;
}
.view.active-view {
    display: block;
    animation: fadeIn 0.5s;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* --- SIDEBAR --- */
.sidebar-link {
    transition: background-color 0.2s, color 0.2s;
}
.sidebar-link:not(.active):hover {
    background-color: var(--bg-secondary);
}
.sidebar-link.active,
.sidebar-link.active:hover {
    background-color: var(--text-main);
    color: var(--bg-main);
    font-weight: bold;
}

/* --- FORM & BUTTONS --- */
.form-input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: 'Jersey 10', sans-serif;
    font-size: 1.25rem;
}
textarea.form-input {
    min-height: 120px;
}
.form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}
.form-input:focus {
    outline: 2px solid var(--text-main);
    outline-offset: 2px;
    --tw-ring-color: transparent;
}
.btn {
    background-color: var(--text-main);
    color: var(--bg-main);
    border: 2px solid var(--text-main);
    transition: all 0.2s ease-in-out;
    padding: 0.5rem 1rem;
}
.btn:hover {
    background-color: var(--bg-main);
    color: var(--text-main);
}
.btn-outline {
    background-color: var(--bg-main);
    color: var(--text-main);
    border: 2px solid var(--text-main);
    padding: 0.5rem 1rem;
}
.btn-outline:hover {
    background-color: var(--text-main);
    color: var(--bg-main);
}
.btn.recording {
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--text-main); }
    70% { box-shadow: 0 0 0 10px rgba(0, 0, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0); }
}

/* --- COMPONENTS --- */
.mood-btn.selected {
    background-color: var(--mood-highlight);
    transform: scale(1.25);
}
.calendar-day {
    border: 1px solid var(--border-color);
    min-height: 120px;
    padding: 8px;
    transition: background-color 0.2s;
    display: flex;
    flex-direction: column;
}
.calendar-day.other-month {
    background-color: var(--bg-secondary);
    opacity: 0.5;
}
.calendar-day.has-due-date {
    cursor: pointer;
}
.cal-item {
    font-size: 0.7rem;
    font-family: sans-serif;
    padding: 2px 4px;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}
.cal-item-note {
    background-color: var(--cal-note-bg);
    color: var(--cal-note-text);
}
.cal-item-task {
    background-color: var(--cal-task-bg);
    color: var(--cal-task-text);
}

/* --- FLASHCARD STYLES --- */
.flashcard-container {
    perspective: 1000px;
}
.flashcard {
    width: 100%;
    height: 250px;
    position: relative;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}
.flashcard.is-flipped {
    transform: rotateY(180deg);
}
.flashcard-face {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--bg-secondary);
}
.flashcard-back {
    transform: rotateY(180deg);
}