:root {
    --bg-color: #f7f9fc;
    --text-color: #1a1a2e;
    --card-bg: rgba(255, 255, 255, 0.6);
    --card-border: rgba(255, 255, 255, 0.4);
    --card-hover-bg: rgba(255, 255, 255, 0.9);
    --shadow: rgba(0, 0, 0, 0.05);
    
    font-family: 'Inter', sans-serif;
}

[data-theme='dark'] {
    --bg-color: #0f1015;
    --text-color: #e2e8f0;
    --card-bg: rgba(25, 26, 35, 0.6);
    --card-border: rgba(255, 255, 255, 0.05);
    --card-hover-bg: rgba(40, 42, 54, 0.8);
    --shadow: rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: #0f1015;
        --text-color: #e2e8f0;
        --card-bg: rgba(25, 26, 35, 0.6);
        --card-border: rgba(255, 255, 255, 0.05);
        --card-hover-bg: rgba(40, 42, 54, 0.8);
        --shadow: rgba(0, 0, 0, 0.3);
    }
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
    position: relative;
}

/* Header */
.header {
    width: 100%;
    max-width: 600px;
    padding: 2rem 1.5rem 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.logo {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: -0.04em;
    white-space: nowrap;
}

.logo-text-wrapper {
    display: flex;
    flex-direction: column;
}

.logo-subtitle {
    font-size: 0.75rem;
    opacity: 0.6;
    font-weight: 400;
    margin-top: 0.1rem;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

@media (max-width: 480px) {
    .logo-subtitle {
        display: none;
    }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--text-color);
    background: transparent;
    transition: all 0.2s ease;
    opacity: 0.7;
}

.social-icon:hover {
    background: var(--card-bg);
    transform: translateY(-2px);
    opacity: 1;
}

.social-icon svg {
    width: 18px;
    height: 18px;
}

.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-color);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.2s ease, background 0.2s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: scale(1.05);
    background: var(--card-hover-bg);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
    position: absolute;
    transition: opacity 0.3s ease, transform 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
}

[data-theme='dark'] .sun-icon, :root:not([data-theme="light"]) .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme='dark'] .moon-icon, :root:not([data-theme="light"]) .moon-icon {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme='light'] .sun-icon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme='light'] .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) .sun-icon {
        opacity: 0;
        transform: rotate(-90deg);
    }
    :root:not([data-theme="dark"]) .moon-icon {
        opacity: 1;
        transform: rotate(0deg);
    }
}

/* Main Content */
.main-content {
    width: calc(100% - 2rem);
    max-width: 500px;
    margin-top: 0rem;
    margin-bottom: 2rem;
    margin-left: 1rem;
    margin-right: 1rem;
    padding: 1rem 1.5rem 2rem 1.5rem;
    z-index: 10;
}

/* Projects Section */
.projects-section {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    opacity: 0.5;
    margin-left: 0.5rem;
    margin-bottom: 0.25rem;
}

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.project-card {
    display: block;
    padding: 0;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.project-image {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 21 / 9;
    object-fit: cover;
    object-position: top;
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 3rem 1.25rem 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0) 100%);
    color: #ffffff;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,0.08), transparent);
    transform: translateX(-100%);
    transition: 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.project-card:hover::before {
    transform: translateX(100%);
}

.project-card:hover {
    transform: translateY(-2px);
    background: var(--card-hover-bg);
    box-shadow: 0 4px 12px var(--shadow);
}

.project-title {
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 0.15rem;
    letter-spacing: -0.02em;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}

.project-desc {
    font-size: 0.85rem;
    opacity: 0.9;
    line-height: 1.3;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}

/* Light mode tweak for media query edge cases */
@media (prefers-color-scheme: dark) {
    [data-theme='light'] .sun-icon {
        opacity: 0;
        transform: rotate(-90deg);
    }
    [data-theme='light'] .moon-icon {
        opacity: 1;
        transform: rotate(0deg);
    }
}
@media (prefers-color-scheme: light) {
    [data-theme='dark'] .sun-icon {
        opacity: 1;
        transform: rotate(0deg);
    }
    [data-theme='dark'] .moon-icon {
        opacity: 0;
        transform: rotate(90deg);
    }
}