:root {
    --gold: #d4af37;
    --bg: #050505;
    --card: #0d0d0d;
    --border: #1a1a1a;
    --red: #ff4757;
    --text-muted: #555;
    --white: #ffffff;
}
/* esto es del body */
body {
    margin: 0; padding: 20px; background: var(--bg); color: #fff;
    font-family: 'Inter', sans-serif; display: flex; flex-direction: column; align-items: center; min-height: 100vh;
}

.container { width: 100%; max-width: 400px; }

.stats-bar {
    display: flex; justify-content: space-around; background: var(--card);
    padding: 15px; border-radius: 20px; border: 1px solid var(--border); margin-bottom: 20px;
}
.stat-label { display: block; font-size: 0.6rem; text-transform: uppercase; color: var(--text-muted); letter-spacing: 1px; }
.stat-value { font-size: 1rem; font-weight: 700; color: var(--gold); }

.success-glow { animation: pulse 2s infinite; }
@keyframes pulse { 0% { color: var(--gold); } 50% { color: #fff; text-shadow: 0 0 10px var(--gold); } 100% { color: var(--gold); } }

.card {
    background: var(--card); padding: 2rem; border-radius: 30px;
    border: 1px solid var(--border); box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    text-align: center; position: relative; overflow: hidden;
}

.progress-container { position: absolute; top: 0; left: 0; width: 100%; height: 5px; background: #000; }
.progress-bar { height: 100%; width: 100%; background: var(--gold); transition: width 1s linear; }

.title { font-size: 0.7rem; letter-spacing: 4px; color: #333; text-transform: uppercase; margin-bottom: 20px; }
.step-label { font-size: 0.65rem; color: var(--gold); text-transform: uppercase; display: block; margin-bottom: 8px; font-weight: 700; }
.setup-section { margin-bottom: 20px; }

.mode-selector { display: flex; gap: 8px; justify-content: center; margin-bottom: 10px; }
.mode-btn {
    background: #000; border: 1px solid var(--border); color: #444;
    padding: 8px 12px; border-radius: 10px; cursor: pointer; font-size: 0.7rem; transition: 0.3s;
}
.mode-btn.active { border-color: var(--gold); color: #fff; background: #111; }

.custom-time-wrapper { display: flex; justify-content: center; gap: 5px; }
.custom-time-wrapper input { width: 60px; background: #000; border: 1px solid var(--border); border-radius: 8px; color: var(--gold); text-align: center; outline: none; }
.btn-setup { background: transparent; border: 1px solid var(--gold); color: var(--gold); font-size: 0.6rem; padding: 5px 10px; border-radius: 8px; cursor: pointer; text-transform: uppercase; }

.timer-display { font-size: 6rem; font-weight: 100; margin: 10px 0; letter-spacing: -4px; transition: color 0.3s; }

input[type="text"] {
    width: 100%; background: #000; border: 1px solid var(--border); padding: 15px;
    border-radius: 15px; color: #fff; text-align: center; outline: none; box-sizing: border-box;
}

#status { font-size: 0.7rem; color: #444; margin: 15px 0; font-style: italic; min-height: 14px; }

.button-group { display: flex; gap: 10px; }
.btn-primary { flex: 2; background: var(--gold); color: #000; font-weight: 700; border: none; padding: 18px; border-radius: 15px; cursor: pointer; text-transform: uppercase; transition: 0.2s; }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary { flex: 1; background: transparent; border: 1px solid var(--border); color: #444; padding: 18px; border-radius: 15px; cursor: pointer; text-transform: uppercase; }

.ambient-selector { display: flex; justify-content: center; gap: 15px; margin-top: 20px; opacity: 0.3; transition: 0.3s; }
.ambient-selector:hover { opacity: 1; }
.ambient-btn { background: none; border: none; font-size: 1.2rem; cursor: pointer; filter: grayscale(1); transition: 0.3s; }
.ambient-btn.active { filter: grayscale(0); transform: scale(1.2); }

.log-container { width: 100%; margin-top: 30px; }
.log-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding-bottom: 10px; margin-bottom: 15px; }
.log-header h3 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 2px; color: var(--text-muted); }

#sessionLog { list-style: none; padding: 0; max-height: 250px; overflow-y: auto; }
.log-item { background: #080808; padding: 12px; border-radius: 12px; margin-bottom: 8px; border-left: 3px solid var(--gold); font-size: 0.8rem; display: flex; justify-content: space-between; align-items: center; }
.log-item.failed { border-left-color: var(--red); opacity: 0.4; }
.text-btn { background: none; border: none; color: #444; font-size: 0.6rem; cursor: pointer; text-transform: uppercase; }
.text-btn:hover { color: var(--red); }