/* ==========================================================================
   LAYOUT & GRID STRUCTURE
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

aside.sidebar {
    display: flex;
    flex-direction: column;
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 20px 16px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

main.main-content {
    flex: 1;
    padding: 28px 36px;
    max-width: 1400px;
}

.hero-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 28px;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.form-grid-3col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 14px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.day-schedule-grid {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}