/* --- ZMIENNE KOLORYSTYCZNE --- */
:root {
    /* Motyw Jasny (Light Mode) */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-main: #2d3436;
    --text-secondary: #636e72;
    --primary-color: #0984e3; /* Profesjonalny niebieski */
    --border-color: #e0e4e8;
    --nav-bg: #ffffff;
    --input-bg: #ffffff;
    --shadow: 0 8px 30px rgba(0,0,0,0.05);
}

[data-theme="dark"] {
    /* Motyw Ciemny (Eye-Friendly Dark) */
    --bg-color: #121417;     /* Głęboki grafit */
    --card-bg: #1e2126;     /* Jaśniejszy grafit dla kart */
    --text-main: #e0e0e0;    /* Złamana biel (nie razi) */
    --text-secondary: #a0a6ac;
    --primary-color: #3498db;
    --border-color: #2d3238;
    --nav-bg: #1e2126;
    --input-bg: #2d3238;
    --shadow: 0 10px 40px rgba(0,0,0,0.3);
}

/* --- OGÓLNE --- */
body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding-top: 85px; /* Miejsce na górne menu */
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 100px;
}

/* --- NAWIGACJA GÓRNA --- */
.nav-top {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--nav-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    box-shadow: var(--shadow);
    z-index: 2000;
    border-bottom: 1px solid var(--border-color);
}

.nav-top a {
    text-decoration: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: 0.2s;
}

.nav-top a i {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.nav-top a.active, .nav-top a:hover {
    color: var(--primary-color);
}

/* --- KARTY (CARDS) --- */
.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

/* --- FORMULARZE I INPUTY --- */
input, select, textarea {
    background: var(--input-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 15px;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
    outline: none;
}

input:focus {
    border-color: var(--primary-color);
}

label {
    color: var(--text-secondary);
}

/* --- PRZYCISKI --- */
.btn {
    border: none;
    border-radius: 14px;
    padding: 15px 25px;
    font-weight: 800;
    cursor: pointer;
    transition: 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

/* --- SUWAK BÓLU (RANGE) --- */
input[type=range] {
    -webkit-appearance: none;
    background: transparent;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 10px;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 22px;
    width: 22px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    margin-top: -7px;
    box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

/* --- RESPONSYWNOŚĆ SIDEBARA --- */
@media (max-width: 900px) {
    .workout-layout {
        display: flex;
        flex-direction: column;
    }
    .sidebar {
        order: 2; /* Sidebar na dole na telefonach */
    }
    .exercise-list {
        order: 1;
    }
}