/* ============================================================
   CSS VARIABLES — Light Mode (default)
   ============================================================ */
:root {
    --bg:           #ffffff;
    --bg-panel:     rgba(0, 0, 0, 0.04);
    --bg-panel-hover: rgba(0, 0, 0, 0.07);
    --text:         #111111;
    --text-muted:   #444444;
    --nav-bg:       #111111;
    --nav-text:     #ffffff;
    --nav-hover-bg: #ffffff;
    --nav-hover-text: #111111;
    --border:       rgba(0, 0, 0, 0.12);
    --accent:       #111111;
    --shadow:       0 2px 16px rgba(0, 0, 0, 0.08);
    --radius:       10px;
    --transition:   0.3s ease;
}

/* ============================================================
   Dark Mode — toggled via body.dark
   ============================================================ */
body.dark {
    --bg:           #0f0f0f;
    --bg-panel:     rgba(255, 255, 255, 0.06);
    --bg-panel-hover: rgba(255, 255, 255, 0.10);
    --text:         #f0f0f0;
    --text-muted:   #aaaaaa;
    --nav-bg:       #f0f0f0;
    --nav-text:     #111111;
    --nav-hover-bg: #111111;
    --nav-hover-text: #f0f0f0;
    --border:       rgba(255, 255, 255, 0.12);
    --accent:       #f0f0f0;
    --shadow:       0 2px 16px rgba(0, 0, 0, 0.4);
}

/* ============================================================
   Page-level Transition (light ↔ dark)
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    transition:
        background-color var(--transition),
        color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

/* ============================================================
   Base Reset
   ============================================================ */
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    font-family: 'Georgia', serif;
    background-color: var(--bg);
    color: var(--text);
    background-image: none;
}

/* Under-construction page */
body.construct {
    background-color: #000000;
}

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4 {
    font-family: 'Georgia', serif;
    color: var(--text);
    letter-spacing: -0.01em;
}

p, li {
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
}

li {
    padding: 4px 0;
}

a {
    color: var(--text);
    text-decoration: underline;
    text-underline-offset: 3px;
}

a:hover {
    opacity: 0.65;
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 12px 0;
}

/* ============================================================
   Navigation Bar
   ============================================================ */
.navbar {
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--nav-bg);
    z-index: 100;
    box-shadow: 0 1px 0 var(--border);
}

.navbar ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.navbar ul li {
    margin: 0;
    padding: 0;
}

.navbar ul li a {
    text-decoration: none;
    display: block;
    padding: 16px 28px;
    color: var(--nav-text);
    font-family: 'Georgia', serif;
    font-size: 14px;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition:
        background-color 0.25s ease,
        color 0.25s ease;
}

.navbar ul li a:hover {
    background-color: var(--nav-hover-bg);
    color: var(--nav-hover-text);
}

/* ============================================================
   Panels / Containers
   ============================================================ */
.split-container {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
}

.left-container,
.right-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    width: 48%;
    padding: 20px;
    border-radius: var(--radius);
    margin: 15px;
    box-shadow: var(--shadow);
}

.big-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    width: calc(100% - 20px);
    padding: 20px;
    border-radius: var(--radius);
    margin: 10px;
    box-shadow: var(--shadow);
}

.small-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    width: calc(33.33% - 20px);
    padding: 20px;
    border-radius: var(--radius);
    margin: 10px;
    box-shadow: var(--shadow);
    flex: 1 1 200px;
}

.inner-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    width: 100%;
    margin: 5px 10px;
    padding: 15px;
}

/* ============================================================
   Resume / About — Banner
   ============================================================ */
.banner {
    padding-top: 80px;
    text-align: center;
}

.name {
    font-size: 48px;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 18px;
    font-weight: 400;
    color: var(--text-muted);
    margin: 6px 0 10px;
}

/* ============================================================
   Home — Intro Card
   ============================================================ */
.intro-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    width: 80%;
    padding: 20px;
    border-radius: var(--radius);
}

.left {
    border-radius: var(--radius);
    width: 50%;
    float: left;
}

.right {
    float: right;
    width: 48%;
    padding-top: 10px;
    text-align: center;
}

.intro-img {
    border-radius: var(--radius);
    width: 100%;
    display: block;
}

/* ============================================================
   Under Construction
   ============================================================ */
.notice {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* ============================================================
   Gallery — Carousel
   ============================================================ */
.carousel-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    background-color: var(--bg-panel);
}

.carousel {
    display: flex;
    width: 100%;
    transition: transform 0.5s ease-in-out;
}

.carousel-slides {
    flex: 0 0 100%;
    min-width: 100%;
    height: 70vh;
}

.carousel-slides img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
}

.carousel-buttons button {
    padding: 10px 20px;
    border: none;
    background-color: transparent;
    color: var(--text);
    font-size: 14px;
    font-family: 'Georgia', serif;
    cursor: pointer;
    letter-spacing: 0.04em;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.carousel-buttons button:hover {
    background-color: var(--nav-bg);
    color: var(--nav-text);
}

#autoplay-label {
    flex: 1;
    text-align: center;
    font-size: 14px;
    cursor: pointer;
    color: var(--text-muted);
    font-family: 'Georgia', serif;
}

#autoplay-toggle {
    margin-right: 5px;
    transform: scale(1.2);
    cursor: pointer;
    accent-color: var(--text);
}

/* ============================================================
   Responsive — Mobile First
   ============================================================ */
@media only screen and (max-width: 449px) {
    h2 {
        font-size: 20px;
    }
    h3 {
        font-size: 14px;
    }
    p {
        font-size: 11px;
    }
    li, b {
        font-size: 11px;
    }
    ul {
        padding-left: 10px;
    }
    .name {
        font-size: 30px;
    }
    .subtitle {
        font-size: 12px;
    }
    .intro-container {
        width: 90%;
        margin-top: 35px;
    }
    .left, .right {
        width: 100%;
        float: none;
        font-size: 12px;
        text-align: center;
    }
    .navbar ul li a {
        padding: 10px 10px;
        font-size: 11px;
    }
    .left-container,
    .right-container {
        width: 47%;
        margin: 5px;
        padding: 15px;
    }
    .small-container {
        width: calc(100% - 20px);
    }
    .carousel-container {
        width: 92%;
    }
    .carousel-slides { height: 30vh; }
    .carousel { height: 30vh; }
}

@media only screen and (min-width: 450px) and (max-width: 599px) {
    .intro-container {
        width: 90%;
    }
    .left, .right {
        width: 100%;
        float: none;
        font-size: 13px;
        text-align: center;
    }
    .navbar ul li a {
        padding: 10px 10px;
        font-size: 12px;
    }
    .left-container,
    .right-container {
        width: calc(100% - 20px);
    }
    .small-container {
        width: calc(100% - 20px);
    }
    .carousel-container {
        width: 92%;
    }
    .carousel-slides { height: 30vh; }
    .carousel { height: 30vh; }
}

@media only screen and (min-width: 600px) and (max-width: 899px) {
    .intro-container { width: 88%; }
    .left, .right { width: 100%; float: none; font-size: 13px; text-align: center; }
    .split-container {
        display: flex;
    }
    .left-container {
        width: 45%;
    }
    .right-container {
        margin-left: auto;
    }
    .carousel-slides { height: 40vh; }
    .carousel { height: 40vh; }
    .navbar ul li a { padding: 12px 14px; font-size: 13px; }
}

@media only screen and (min-width: 900px) and (max-width: 1099px) {
    .intro-container { width: 85%; }
    .left { width: 40%; }
    .right { width: 56%; font-size: 13px; text-align: left; }
    .split-container {
        display: flex;
    }
    .left-container {
        width: 45%;
    }
    .right-container {
        margin-left: auto;
    }
    .carousel-slides { height: 50vh; }
    .carousel { height: 50vh; }
}

@media only screen and (min-width: 1100px) {
    .intro-container { width: 80%; }
    .left { width: 40%; }
    .right { width: 58%; font-size: 15px; text-align: left; padding: 0; margin: 0; }
    .split-container {
        display: flex;
    }
    .left-container {
        width: 47%;
    }
    .right-container {
        margin-left: auto;
    }
    .navbar ul li a { padding: 16px 28px; }
    .carousel-slides { height: 70vh; }
    .carousel { height: 70vh; }
}

@media only screen and (min-width: 1400px) {
    .left { width: 50%; }
    .right { width: 48%; font-size: 15px; text-align: center; padding: 10px; }
}

@media only screen and (max-height: 500px) {
    .carousel-container { width: 400px; }
    .carousel-slides { height: 50vh; }
    .carousel { height: 50vh; }
    .navbar ul li a { padding: 10px 12px; }
}

@media only screen and (max-height: 700px) {
    .left { width: 40%; }
    .right { width: 58%; font-size: 9.5px; text-align: left; margin: 0; padding: 0; }
}