/* Minimalistic CSS for Personal Website */

/* Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base Styles */
body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    color: #263238;
    background: linear-gradient(-45deg, #ffb3a1, #ffa8d1, #87ceeb, #98f5e1, #fff2a1, #ffb3b3);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    min-height: 100vh;
    padding: 20px;
}

/* Single main content container */
.site-container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.68);
    backdrop-filter: blur(12px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.72);
    box-shadow: 0 18px 50px rgba(31, 41, 55, 0.1);
    padding: 20px;
}

/* Animated gradient background */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Typography */
h1, h2, h3 {
    margin-bottom: 20px;
    font-weight: 650;
    color: #171a1f;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2rem;
    margin-top: 0;
}

h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

h3 {
    font-size: 1.2rem;
    margin-top: 25px;
}

p {
    margin-bottom: 20px;
    line-height: 1.75;
}

/* Navigation */
nav {
    margin: 20px 0 32px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin: 0;
}

nav li {
    margin: 0;
}

nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 108px;
    min-height: 42px;
    overflow: hidden;
    text-decoration: none;
    color: #29383e;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    padding: 9px 18px 9px 28px;
    border: 1px solid rgba(67, 91, 101, 0.34);
    border-radius: 2px;
    background:
        linear-gradient(90deg, rgba(112, 229, 221, 0.18) 0 5px, transparent 5px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(222, 236, 237, 0.56));
    backdrop-filter: blur(10px);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.95),
        inset 0 -1px 0 rgba(43, 64, 72, 0.12),
        0 3px 8px rgba(29, 50, 57, 0.1);
    clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
    filter: drop-shadow(0 0 0 rgba(73, 245, 236, 0));
    transition:
        color 160ms ease,
        background 160ms ease,
        border-color 160ms ease,
        box-shadow 160ms ease,
        filter 160ms ease,
        transform 90ms ease;
}

nav a::before {
    content: "";
    position: absolute;
    left: 11px;
    top: 50%;
    width: 3px;
    height: 14px;
    border-radius: 1px;
    background: rgba(52, 81, 91, 0.38);
    transform: translateY(-50%);
    transition: background 160ms ease, box-shadow 160ms ease;
}

nav a::after {
    content: "";
    position: absolute;
    right: 9px;
    bottom: 6px;
    width: 18px;
    height: 1px;
    background: rgba(28, 123, 130, 0.58);
    transform: scaleX(0.35);
    transform-origin: right;
    transition: background 160ms ease, transform 160ms ease;
}

nav a:hover,
nav a:focus-visible {
    color: #092d35;
    text-decoration: none;
    border-color: rgba(54, 179, 181, 0.72);
    background:
        linear-gradient(90deg, rgba(105, 255, 244, 0.42) 0 5px, transparent 5px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(191, 235, 234, 0.66));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 1),
        inset 0 0 16px rgba(104, 255, 244, 0.42),
        0 4px 10px rgba(29, 50, 57, 0.12);
    filter: drop-shadow(0 0 7px rgba(73, 245, 236, 0.48));
    outline: none;
    transform: translateY(-1px);
}

nav a:hover::before,
nav a:focus-visible::before,
nav a[aria-current="page"]::before {
    background: #efffff;
    box-shadow: 0 0 3px #fff, 0 0 10px rgba(49, 238, 226, 0.95);
}

nav a:hover::after,
nav a:focus-visible::after,
nav a[aria-current="page"]::after {
    background: rgba(14, 145, 151, 0.9);
    transform: scaleX(1);
}

nav a:active {
    background:
        linear-gradient(90deg, rgba(71, 218, 210, 0.45) 0 5px, transparent 5px),
        linear-gradient(180deg, rgba(197, 224, 225, 0.78), rgba(242, 255, 255, 0.7));
    box-shadow:
        inset 0 3px 8px rgba(27, 67, 75, 0.22),
        inset 0 0 10px rgba(91, 255, 244, 0.34);
    filter: drop-shadow(0 0 3px rgba(73, 245, 236, 0.45));
    transform: translate(1px, 2px) scale(0.985);
    transition-duration: 55ms;
}

nav a[aria-current="page"] {
    color: #092d35;
    border-color: rgba(44, 151, 157, 0.62);
    background:
        linear-gradient(90deg, rgba(71, 224, 214, 0.38) 0 5px, transparent 5px),
        linear-gradient(180deg, rgba(240, 255, 255, 0.88), rgba(194, 229, 229, 0.68));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.95),
        inset 0 0 12px rgba(99, 235, 227, 0.3),
        0 3px 8px rgba(29, 50, 57, 0.12);
}

/* Layout Components */
header {
    margin-bottom: 20px;
}

main {
    margin-bottom: 20px;
}

section, article {
    margin-bottom: 30px;
}

footer {
    text-align: center;
    font-size: 0.9rem;
    color: #333;
    padding: 10px 0 0 0;
}

/* Lists */
ul, ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

li {
    margin-bottom: 8px;
}

/* Links */
a {
    color: #0066cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Blog Articles */
article {
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

article:last-child {
    border-bottom: none;
}

article h3 {
    margin-top: 0;
}

article em {
    color: #666;
    font-size: 0.9rem;
}

/* Card-style content tabs */
.content-tabs {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 105px;
    gap: 24px;
    align-items: start;
}

.tab-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    grid-column: 2;
    grid-row: 1;
}

.tab-panels {
    grid-column: 1;
    grid-row: 1;
}

.tab-card {
    position: relative;
    display: block;
    overflow: hidden;
    padding: 9px 10px 9px 20px;
    color: #29383e;
    text-align: left;
    border-radius: 2px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(222, 236, 237, 0.48));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(67, 91, 101, 0.28);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92);
    clip-path: polygon(5px 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%, 0 5px);
    filter: drop-shadow(0 0 0 rgba(73, 245, 236, 0));
    transition:
        color 160ms ease,
        background 160ms ease,
        border-color 160ms ease,
        box-shadow 160ms ease,
        filter 160ms ease,
        transform 90ms ease;
}

.tab-card::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 50%;
    width: 2px;
    height: 12px;
    border-radius: 1px;
    background: rgba(52, 81, 91, 0.34);
    transform: translateY(-50%);
    transition: background 160ms ease, box-shadow 160ms ease;
}

.tab-card:hover,
.tab-card:focus-visible {
    color: #092d35;
    text-decoration: none;
    border-color: rgba(54, 179, 181, 0.68);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(191, 235, 234, 0.62));
    box-shadow: inset 0 0 14px rgba(104, 255, 244, 0.4);
    filter: drop-shadow(0 0 6px rgba(73, 245, 236, 0.45));
    transform: translateX(-2px);
    outline: none;
}

.tab-card:hover::before,
.tab-card:focus-visible::before,
.tab-card[aria-selected="true"]::before {
    background: #efffff;
    box-shadow: 0 0 3px #fff, 0 0 9px rgba(49, 238, 226, 0.92);
}

.tab-card:active {
    box-shadow: inset 0 3px 7px rgba(27, 67, 75, 0.22);
    filter: drop-shadow(0 0 3px rgba(73, 245, 236, 0.4));
    transform: translate(1px, 2px) scale(0.985);
    transition-duration: 55ms;
}

.tab-card[aria-selected="true"] {
    color: #092d35;
    background: linear-gradient(180deg, rgba(240, 255, 255, 0.88), rgba(194, 229, 229, 0.68));
    border-color: rgba(44, 151, 157, 0.58);
    box-shadow:
        inset 0 0 11px rgba(99, 235, 227, 0.27),
        0 3px 8px rgba(29, 50, 57, 0.1);
}

.tab-card strong {
    font-weight: 700;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.2;
}

.tab-panel {
    animation: tabPanelIn 0.3s ease;
}

.tab-panel[hidden] {
    display: none;
}

.tab-panel h3 {
    margin-top: 0;
}

@keyframes tabPanelIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 520px) {
    body {
        padding: 12px;
    }

    .site-container {
        padding: 18px;
    }

    nav ul {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    nav a {
        min-width: 0;
        min-height: 40px;
        width: 100%;
        padding: 8px 13px 8px 24px;
    }

    .content-tabs {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .tab-list {
        flex-direction: row;
        flex-wrap: wrap;
        grid-column: 1;
        grid-row: auto;
    }

    .tab-panels {
        grid-column: 1;
        grid-row: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    nav a,
    nav a::before,
    nav a::after,
    .tab-card,
    .tab-card::before,
    .tab-panel {
        transition: none;
        animation: none;
    }
}