:root {
    --primary: #F25C05;
    --primary-hover: #d94e04;
    --bg: #121212;
    --surface: #1E1E1E;
    --text: #E0E0E0;
    --text-light: #AAAAAA;
    --border: #333333;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

::selection { background-color: var(--primary); color: #ffffff; }

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Outfit', sans-serif; -webkit-tap-highlight-color: transparent; }

body {
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto; 
}

/* --- NAVBAR UPDATED --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    width: 100%;
    position: absolute; 
    top: 0; 
    left: 0; 
    z-index: 50;
    height: 70px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; }
.logo-img { height: 30px; width: auto; }
.nav-controls { display: flex; gap: 15px; align-items: center; }

/* Updated to include 'a.nav-btn' for the Developer Link */
.nav-controls button, .nav-controls a.nav-btn { 
    background: none; 
    border: none; 
    color: var(--text); 
    font-size: 1.2rem; 
    cursor: pointer; 
    transition: 0.2s; 
    padding: 5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none; /* Removes underline from the link */
}
.nav-controls button:hover, .nav-controls a.nav-btn:hover { color: var(--primary); }

/* --- MUSIC PANEL --- */
.music-panel {
    position: absolute;
    top: 75px;
    right: 20px;
    width: 90vw;
    max-width: 360px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.8);
    z-index: 100;
    opacity: 1;
    transform: translateY(0);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.music-panel.hidden {
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    visibility: hidden;
}

.music-panel h3 { font-size: 1rem; margin-bottom: 0; }
.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
#close-music { background: none; border: none; color: var(--text-light); cursor: pointer; font-size: 1.2rem; padding: 5px; }
#close-music:hover { color: var(--primary); }

.sound-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin: 20px 0;
}

.sound-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 8px; cursor: pointer; color: var(--text-light); transition: 0.2s;
    aspect-ratio: 1 / 1; padding: 0;
}

.sound-item i { font-size: 1.2rem; }
.sound-item span { font-size: 0.7rem; }
.sound-item:hover { border-color: var(--primary); color: var(--text); }
.sound-item.active {
    background: var(--primary); color: white; border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(242, 92, 5, 0.3);
}

/* VOLUME CONTROL */
.volume-control {
    display: flex; align-items: center; gap: 10px; color: var(--text-light); font-size: 0.9rem;
    background: var(--bg); padding: 10px 15px; border-radius: 50px; border: 1px solid var(--border);
}
.volume-control i { color: var(--primary); } 
.volume-control input { flex: 1; accent-color: var(--primary); cursor: pointer; height: 4px; }

/* --- MAIN LAYOUT --- */
.container {
    display: flex; 
    flex-direction: column;
    align-items: stretch; 
    gap: 20px; 
    width: 100%; 
    max-width: 1600px; 
    margin: 0 auto; 
    padding: 80px 20px 40px;
    min-height: 100vh;
}

/* TIMER SECTION */
.timer-section { 
    display: flex; flex-direction: column; 
    width: 100%;
}

.timer-card {
    background: var(--surface); 
    border-radius: 24px; 
    box-shadow: var(--shadow); 
    border: 1px solid var(--border);
    width: 100%; 
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    text-align: center;
    position: relative; 
    padding: 40px 20px;
    min-height: 400px;
}

/* TABS & CLOCK CONTAINER */
.tabs-container {
    display: flex; 
    flex-wrap: wrap; 
    justify-content: center; 
    align-items: center; 
    gap: 10px; 
    background: var(--bg); 
    padding: 5px 8px;
    border-radius: 50px; 
    border: 1px solid var(--border); 
    margin-bottom: 30px;
    max-width: 100%;
}

.tabs { display: flex; gap: 5px; }

.tab-btn {
    background: transparent; border: none; padding: 8px 16px; border-radius: 50px;
    cursor: pointer; color: var(--text-light); font-weight: 500; font-size: 0.8rem; transition: 0.3s;
    white-space: nowrap;
}
.tab-btn.active { background: var(--primary); color: white; }

.live-clock {
    background: rgba(255, 255, 255, 0.05); 
    color: var(--text); padding: 8px 16px;
    border-radius: 50px; font-size: 0.85rem; font-weight: 700; 
    border-left: 1px solid var(--border);
    display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.live-clock::before {
    content: ''; width: 6px; height: 6px; background-color: var(--primary); border-radius: 50%;
    display: inline-block; box-shadow: 0 0 8px rgba(242, 92, 5, 0.6); animation: blink 2s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* CUSTOM INPUTS */
.custom-inputs { display: flex; gap: 10px; margin-bottom: 30px; align-items: center; flex-wrap: wrap; justify-content: center;}
.custom-inputs.hidden { display: none; }

.input-wrapper input { 
    background-color: #000000; /* Black Background */
    border: 1px solid var(--border); 
    color: #ffffff; /* White Text */
    padding: 10px; 
    width: 55px; 
    border-radius: 10px; 
    text-align: center; 
    color-scheme: dark; 
}
#set-custom-btn { background: var(--primary); color: white; border: none; width: 35px; height: 35px; border-radius: 10px; cursor: pointer; }

/* TIMER DISPLAY */
.timer-display h1 {
    font-size: clamp(4rem, 15vw, 10rem); 
    font-weight: 800; color: var(--text); line-height: 1;
    margin: 20px 0; font-variant-numeric: tabular-nums; 
    letter-spacing: clamp(5px, 2vw, 20px); 
    text-align: center;
}

/* CONTROLS */
.controls { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.primary-btn {
    background: var(--primary); color: white; border: none; padding: 15px 40px;
    font-size: 1.1rem; font-weight: 700; border-radius: 16px; cursor: pointer;
    letter-spacing: 1px; text-transform: uppercase; min-width: 140px;
}
.secondary-btn {
    background: transparent; border: 2px solid var(--border); color: var(--text-light);
    width: 50px; height: 50px; border-radius: 16px; cursor: pointer; font-size: 1.1rem;
}
.secondary-btn:hover { border-color: var(--primary); color: var(--primary); }

.quote { margin-top: 30px; color: var(--text-light); font-style: italic; font-size: 0.9rem; padding: 0 10px; }

/* --- SIDEBAR --- */
.sidebar { width: 100%; display: flex; flex-direction: column; gap: 20px; }
.panel { background: var(--surface); border-radius: 20px; box-shadow: var(--shadow); border: 1px solid var(--border); padding: 20px; }

/* STATS */
.stats-panel { flex: 0 0 auto; }
.stat-row { display: flex; align-items: center; justify-content: space-evenly; }
.stat-item { display: flex; align-items: center; gap: 12px; flex: 1; }
.stat-item.right-align { justify-content: end; flex-direction: row-reverse; }
.stat-item.right-align .stat-info { align-items: end; }

/* Stat Info Vertical Stack */
.stat-info { display: flex; flex-direction: column; justify-content: center; }
.stat-number { display: block; font-size: 1.4rem; font-weight: 700; color: var(--text); line-height: 1.1; }
.stat-label { display: block; font-size: 0.8rem; color: var(--text-light); margin-top: 2px; text-align: right;}

.stat-divider { width: 1px; height: 40px; background: var(--border); margin: 0 10px;}
.stat-icon {
    width: 45px; height: 45px; background: rgba(242, 92, 5, 0.1); border-radius: 12px;
    display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.2rem;
}
/* TASKS */
.tasks-panel { flex: 1; display: flex; flex-direction: column; min-height: 300px; max-height: 500px; }
#add-task-btn { background: var(--primary); color: white; border: none; border-radius: 8px; width: 30px; height: 30px; cursor: pointer; }

#task-input {
    width: 100%; 
    padding: 12px; 
    border-radius: 12px; 
    border: 1px solid var(--border);
    background-color: #000000; /* Black Background */
    color: #ffffff; /* White Text */
    outline: none; 
    font-size: 0.9rem;
    color-scheme: dark;
}
#task-input:focus { border-color: var(--primary); }

#task-list { list-style: none; overflow-y: auto; flex: 1; padding-right: 5px; margin-top: 10px; }
#task-list::-webkit-scrollbar { width: 4px; }
#task-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
.task-item { display: flex; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; cursor: pointer; }
.task-checkbox {
    appearance: none; width: 18px; height: 18px; border: 2px solid var(--text-light);
    border-radius: 50%; cursor: pointer; margin-right: 12px; flex-shrink: 0; position: relative;
}
.task-checkbox:checked { background-color: var(--primary); border-color: var(--primary); }
.task-checkbox:checked::after { content: '✔'; position: absolute; color: white; font-size: 10px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.task-item span { flex: 1; word-break: break-word; }
.task-item.done span { text-decoration: line-through; opacity: 0.6; }
.delete-task { color: #ff4757; background: none; border: none; cursor: pointer; margin-left: 10px; }

/* --- FULLSCREEN MODE --- */
body.fullscreen-active { overflow: hidden; height: 100vh; }
body.fullscreen-active .navbar, 
body.fullscreen-active .sidebar, 
body.fullscreen-active .tabs-container, 
body.fullscreen-active .quote, 
body.fullscreen-active .custom-inputs { display: none !important; }
body.fullscreen-active .container { height: 100vh; padding: 0; margin: 0; align-items: center; justify-content: center; max-width: 100%; }
body.fullscreen-active .timer-section { flex: none; width: 100%; height: 100%; }
body.fullscreen-active .timer-card { background: transparent; border: none; box-shadow: none; height: 100%; justify-content: center; padding: 0; }
body.fullscreen-active .timer-display h1 { font-size: 20vw; margin: 0; letter-spacing: 0; }

/* --- RESPONSIVE MODAL --- */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8); backdrop-filter: blur(5px);
    z-index: 200; display: flex; justify-content: center; align-items: center;
    opacity: 1; transition: opacity 0.3s ease; 
    padding: 15px; 
}
.modal-overlay.hidden { opacity: 0; pointer-events: none; }

.modal-box {
    background: var(--surface); 
    border: 1px solid var(--border); 
    padding: 25px; 
    border-radius: 20px; 
    width: 100%; 
    max-width: 400px; 
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5); 
    transform: scale(1); 
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-overlay.hidden .modal-box { transform: scale(0.9); }

.modal-icon { 
    font-size: 2.5rem; 
    color: var(--primary); 
    margin-bottom: 15px; 
}

.modal-box h3 { 
    font-size: 1.5rem; 
    color: #ffffff; 
    font-weight: 800; 
    margin-bottom: 10px; 
}

.modal-box p { 
    color: rgba(255, 255, 255, 0.6); 
    font-size: 0.95rem; 
    margin-bottom: 25px; 
    line-height: 1.5; 
}

.modal-actions { 
    display: flex; 
    gap: 15px; 
    justify-content: center; 
    margin-top: 20px; 
    flex-wrap: wrap; 
}
.small-btn { 
    padding: 12px 24px; 
    border-radius: 12px; 
    font-size: 0.9rem;
    flex: 1 1 auto; 
    min-width: 120px; 
}

/* =========================================
   RESPONSIVE BREAKPOINTS
========================================= */

/* Desktop (Landscape) */
@media (min-width: 1024px) {
    body { height: 100vh; overflow: hidden; }
    .container { flex-direction: row; height: 100%; padding: 80px 40px 40px; }
    .timer-section { flex: 3; height: 100%; }
    .timer-card { height: 100%; }
    .sidebar { flex: 1.2; max-width: 450px; height: 100%; }
    .tasks-panel { flex: 1; overflow: hidden; max-height: none; }
    .music-panel { right: 40px; }
}

@media (min-width: 1440px) {
    .container { padding-left: 100px; padding-right: 100px; }
}

/* Tablet */
@media (max-width: 768px) {
    .timer-display h1 { margin: 10px 0; }
    .quote { font-size: 0.8rem; margin-top: 15px; }
    .timer-card { padding: 20px 10px; min-height: 350px; }
    .nav-controls button { font-size: 1.4rem; padding: 10px; }
}

/* Mobile Layout Changes */
@media (max-width: 480px) {
    .brand span { display: block; } 
    .brand { font-size: 1.2rem; }

    .tabs-container { 
        flex-direction: column; 
        background: transparent;
        border: none;
        padding: 0;
        gap: 15px;
    }
    
    .live-clock {
        order: -1; 
        width: 100%;
        justify-content: center;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid var(--border);
        font-size: 1.1rem; 
        padding: 10px;
    }

    .tabs {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 50px;
        padding: 5px;
    }

    .tab-btn { padding: 8px 14px; font-size: 0.8rem; }
    
    .controls { gap: 10px; }
    .primary-btn { padding: 12px 30px; font-size: 1rem; }
    .music-panel { width: 94vw; right: 3vw; }
    .sound-grid { grid-template-columns: repeat(4, 1fr); }
    
    .modal-actions { flex-direction: column; }
    .small-btn { width: 100%; }
}

@media (max-width: 360px) {
    .sound-grid { grid-template-columns: repeat(3, 1fr); }
    .timer-display h1 { letter-spacing: 0; }
}