:root {
    --tspl-gold: #FF4E45;
    --tspl-blue: #0F172A;
    --bg-apple: #fbfbfd;
}

body {
    font-family: 'Space Grotesk', 'IBM Plex Sans Thai', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-apple);
    color: #0F172A;
    letter-spacing: -0.01em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    letter-spacing: -0.02em;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background-color: #e5e7eb;
    border-radius: 10px;
}

html {
    scroll-behavior: smooth;
}

.lang-th,
.lang-en {
    transition: opacity 0.3s ease-in-out;
}

/* Timeline */

/* Gimmick: เส้น Timeline สำหรับส่วนประวัติการศึกษา */
.timeline-line::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 24px;
    bottom: -10px;
    width: 1px;
    background-color: #f3f4f6;
    z-index: 0;
}

.group:last-child .timeline-line::before {
    display: none;
}

/* Advanced Gimmicks */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.hero-glow {
    position: absolute;
    top: 10%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 78, 69, 0.08) 0%, rgba(255, 78, 69, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    animation: pulse-glow 8s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
    0% {
        transform: scale(1) translate(0, 0);
        opacity: 0.5;
    }

    100% {
        transform: scale(1.2) translate(-20px, 20px);
        opacity: 1;
    }
}