/* ── Summer Theme ────────────────── */
.theme-summer {
    --bg-dark: hsl(200, 90%, 15%); /* Deep Ocean */
    --surface: hsl(200, 80%, 20%);
    --surface-light: hsl(200, 70%, 25%);
    --text-main: #ffffff;
    --text-muted: hsl(200, 30%, 75%);
    --accent: hsl(45, 100%, 55%); /* Bright Sun Yellow */
    
    --glass-bg: hsla(200, 80%, 25%, 0.7);
    --glass-border: hsla(45, 100%, 55%, 0.3);
    --glass-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    
    --breakfast: hsl(45, 100%, 55%);  /* Sunlight */
    --lunch: hsl(200, 100%, 60%);    /* Blue Water */
    --dinner: hsl(15, 90%, 55%);     /* Sunset Orange */
    --snacks: hsl(150, 80%, 50%);    /* Tropical Green */
}

.theme-summer body {
    background: radial-gradient(circle at top right, hsl(200, 90%, 25%), var(--bg-dark));
}

.theme-summer .logo-text span {
    color: var(--accent);
    text-shadow: 0 0 15px hsla(45, 100%, 55%, 0.4);
}

.theme-summer .meal-btn.active {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.theme-summer .progress-bar {
    background: linear-gradient(90deg, var(--accent), var(--dinner));
}