/* ============================================================
   Color Scheme: conference_theme
   Clean, modern, high-contrast conference / research-lab look.
   White base, charcoal structure, strong blue links, readable
   cards, and restrained green highlights for achievements.
   ============================================================ */
:root {
    /* Strong blue: links, buttons, primary interactive elements */
    --color-primary: #2563EB;
    --color-primary-light: #2563EB;
    /* Charcoal: navbar, footer, structural anchors */
    --color-primary-dark: #111827;

    /* Blue accent — borders, section markers, timeline, tags */
    --color-accent: #2563EB;
    --color-accent-light: #DBEAFE;

    --color-bg: #FCFCFD;
    --color-bg-alt: #EEF4FF;
    --color-bg-hero: linear-gradient(180deg, #EEF4FF 0%, #FCFCFD 100%);
    --color-bg-card: #FFFFFF;
    --color-text: #111827;
    --color-text-muted: #6B7280;
    --color-border: #E5E7EB;

    /* Subtle charcoal-tinted shadows */
    --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.06);
    --shadow-md: 0 8px 24px rgba(17, 24, 39, 0.08);
    --shadow-lg: 0 18px 48px rgba(17, 24, 39, 0.12);

    /* Semantic helpers */
    --color-heading: #1F2937;
    --color-secondary-hover: #1D4ED8;
    --color-success: #10B981;
    --color-soft-blue: #DBEAFE;
    --color-charcoal-deep: #030712;
}