/* ---------- PAPERMOD DARK THEME — FROSTED GLASS / ACRYLIC ---------- */
:root {
    --bg: #1d1e20;
    /* Increased opacity and added a slightly darker tint for a solid acrylic feel */
    --card-bg: rgba(30, 31, 34, 0.88);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.65);
    --card-hover: rgba(51, 53, 56, 0.9);
    --text: #e6e6e6;
    --text-light: #ffffff;
    --text-muted: #b0b0b0;
    --accent: #d4b84c;
    --accent-hover: #c4a83c;
    --border: #3d3e42;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --transition: all 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Onest', 'Roboto', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background-image: url('ThinkingPlace.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    transition: background-image 0.5s ease-in-out;
}

.container {
    max-width: 700px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ---------- STRONG ACRYLIC / FROSTED GLASS BASE ---------- */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius);
}

/* ---------- HEADER ---------- */
.app-header {
    background: var(--card-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius);
    padding: 0.6rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.3rem;
}
.app-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-light);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.app-header h1 svg {
    stroke: var(--accent);
    fill: none;
}
.app-header span {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ---------- MAIN CARD (strong acrylic) ---------- */
#app {
    background: var(--card-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius);
    padding: 1.2rem;
    text-align: center;
    width: 100%;
    max-height: 70vh;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
    transition: var(--transition);
}
#app:hover {
    border-color: var(--accent);
}
#app::-webkit-scrollbar {
    width: 6px;
}
#app::-webkit-scrollbar-track {
    background: transparent;
}
#app::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

/* ---------- TYPOGRAPHY & ELEMENTS ---------- */
/* #timer {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-light);
    margin: 0.2rem 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
} */

#timer {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-light);
    margin: 0.2rem 0;
    display: flex;                /* changed from inline-flex */
    align-items: baseline;       /* keeps numbers and colon aligned */
    justify-content: center;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);

    /* ★ Fixed width – adjust value if needed */
    width: 200px;
    min-width: 200px;
    flex-shrink: 0;

    /* ★ Monospace digits so each character has equal width */
    /* font-family: 'Roboto Mono', 'Courier New', monospace; */
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.03em;
}

#timer-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 0.2rem 0;
}

.timer-adjust-btn {
    padding: 0.2rem 0.6rem;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}
.timer-adjust-btn:hover {
    opacity: 1;
    border-color: var(--accent);
    color: var(--text-light);
    background: rgba(51, 53, 56, 0.9);
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin: 0.8rem 0;
}

/* ----- All primary buttons with acrylic base ----- */
.button-group button {
    padding: 0.5rem 1.2rem;
    min-width: 100px;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    color: var(--text-muted);
}
.button-group button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Solid accent buttons (still slightly translucent to blend with glass) */
#toggle-timer {
    background: rgba(212, 184, 76, 0.92);
    color: var(--bg);
    border-color: var(--accent);
}
#toggle-timer:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

#reset {
    background: rgba(122, 74, 74, 0.92);
    border-color: rgba(122, 74, 74, 0.92);
    color: #fff;
}
#reset:hover {
    background: rgba(143, 90, 90, 0.95);
    border-color: rgba(143, 90, 90, 0.95);
}

#toggle-music {
    background: rgba(74, 106, 122, 0.92);
    border-color: rgba(74, 106, 122, 0.92);
    color: #fff;
}
#toggle-music:hover {
    background: rgba(90, 122, 138, 0.95);
    border-color: rgba(90, 122, 138, 0.95);
}

/* ----- Form Elements (frosted acrylic) ----- */
select {
    padding: 0.4rem 0.8rem;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    cursor: pointer;
}
select:hover {
    border-color: var(--accent);
}
select:focus {
    outline: none;
    border-color: var(--accent);
}

input[type="text"] {
    padding: 0.4rem 0.8rem;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    color: var(--text);
    width: 100%;
    max-width: 300px;
    font-family: inherit;
}
input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

/* ----- To-Do List Items (frosted) ----- */
ol {
    padding: 0;
    list-style: none;
    margin: 0.3rem 0;
}
li {
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 0.3rem 0.6rem;
    margin: 0.3rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}
li:hover {
    border-color: var(--accent);
}
.task-content {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex: 1;
}
.task-time {
    font-size: 0.75rem;
    opacity: 0.6;
}
.delete-task {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0 0.2rem;
}
.delete-task:hover {
    color: #d47a7a;
}

/* ---------- COLLAPSIBLE SECTIONS – minimal & muted (no glass, just faint lines) ---------- */
.collapsible-section {
    margin: 0.6rem 0;
    text-align: left;
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 0.3rem;
}
.collapsible-header {
    cursor: pointer;
    font-weight: 400;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.1rem 0;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
}
.collapsible-header::before {
    content: '▼';
    font-size: 0.7rem;
    transition: transform 0.2s;
    opacity: 0.5;
}
.collapsible-section.collapsed .collapsible-header::before {
    content: '▶';
}
.collapsible-content {
    overflow: hidden;
    transition: max-height 0.2s ease-out, opacity 0.2s ease-out;
    max-height: 1000px;
    opacity: 1;
    background: transparent;
}
.collapsible-section.collapsed .collapsible-content {
    max-height: 0;
    opacity: 0;
}

/* Current task inside collapsible — light frosted touch */
.current-task {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 0.3rem 0.6rem;
    color: var(--text-muted);
    margin: 0.2rem 0;
}

#pomodoro-count {
    color: var(--accent);
    font-weight: 500;
    margin-top: 0.3rem;
}

/* ---------- FOOTER (acrylic glass) ---------- */
.site-footer {
    background: var(--card-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius);
    padding: 0.5rem 1.2rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.3rem 0.6rem;
    font-size: 0.8rem;
}
.site-footer .footer-left {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}
.site-footer .footer-left a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}
.site-footer .footer-left a:hover {
    color: var(--accent);
}
.site-footer .footer-right {
    color: var(--text-muted);
    font-size: 0.7rem;
}

/* ---------- MINIMAL FROSTED GLASS BACKGROUND CHANGER ---------- */
#background-changer {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    width: 34px;               /* smaller footprint */
    height: 34px;
    border-radius: 50%;
    background: rgba(30, 31, 34, 0.45);  /* more transparent acrylic */
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.08);  /* thinner, subtler border */
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;         /* slightly smaller icon */
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);  /* softer shadow */
    z-index: 10;
}

#background-changer:hover {
    border-color: var(--accent);
    color: var(--text-light);
    background: rgba(30, 31, 34, 0.7);  /* slight darkening on hover */
    transform: scale(1.05);
}



/* ---------- RESPONSIVE ---------- */
@media (max-width: 600px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.2rem;
    }
    .app-header h1 {
        font-size: 1.2rem;
    }
    #timer {
        font-size: 2.8rem;
    }
    .timer-adjust-btn {
        min-width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
    .button-group button {
        min-width: 80px;
        padding: 0.4rem 0.8rem;
    }
    .site-footer {
        flex-direction: column;
        text-align: center;
        gap: 0.2rem;
    }
    .site-footer .footer-left {
        justify-content: center;
    }
    #background-changer {
        bottom: 1rem;
        left: 1rem;
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}