/* ========================================
   ROOT & THEME VARIABLES1
   ======================================== */

:root {
    /* Dark Mode (Default) */
    --bg-image: url('images/dark-bg.png');
    --bg-primary: #06161D;
    --bg-secondary: rgba(112, 131, 135, 0.69);
    --text-primary: #D8D3CB;
    --text-secondary: #000;
    --accent-color: #D8D3CB;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --gradient: linear-gradient(0.88deg, #06161D 5%, rgba(6, 22, 29, 0) 100%);
    --header-bg:rgba(0, 0, 0, 0.2);
    
    /* Light Mode */
    --light-bg-primary: #95D0C4;
    --light-bg-secondary: rgba(235, 227, 201, 0.6);/* Rectangle 6 */
    --light-text-primary: #17414B;
    --light-text-secondary: #fff;
    --light-accent-color: #17414B;
    --light-border-color: #d0d0d0;
    --light-shadow-color: rgba(0, 0, 0, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Typography */
    --font-family: 'Young Serif', sans-serif;
    --font-size-base: 1.25rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 1.75rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;

    /* Transitions */
    --transition-speed: 0.3s;
}

html[data-theme="light"] {
    --bg-image: url('images/light-bg.png');
    --bg-primary: var(--light-bg-primary);
    --bg-secondary: var(--light-bg-secondary);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --accent-color: var(--light-accent-color);
    --border-color: var(--light-border-color);
    --shadow-color: var(--light-shadow-color);
    --gradient: linear-gradient(0.88deg, #95D0C4 5%, rgba(6, 22, 29, 0) 100%);
    --header-bg: rgba(255, 255, 196, 0.2);
}

/* ========================================
   GLOBAL STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: inherit;
}
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 400;
    font-style: normal;
    line-height: 1.6;
    color: var(--text-primary);
    background: 
        var(--gradient),
        var(--bg-image);
    background-color: var(--bg-primary);
    background-size: cover;
    background-repeat: no-repeat, no-repeat;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-speed);
    background: var(--header-bg);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header-title {
    flex: 1;
    text-align: center;
}

.header-title h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}
.header-title h1 span {
    font-size: 70%;
    display: block;
}

.footer {
    text-align: right;
    padding: 50px;
}

.nav-left,
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: color var(--transition-speed);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-speed);
}

.nav-link:hover::after {
    width: 100%;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-speed);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    transition: opacity var(--transition-speed);
}

.theme-toggle .moon-icon {
    position: absolute;
    opacity: 1;
    transform: rotate(0deg);
}

.theme-toggle .sun-icon {
    position: absolute;
    opacity: 0;
    transform: rotate(-180deg);
}

html[data-theme="light"] .theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(180deg);
}

html[data-theme="light"] .theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: calc(100vh - 120px);
}

/* ========================================
   HERO SECTION (HOMEPAGE)
   ======================================== */

.hero {
    margin: 150px 0 auto 0;
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    flex-wrap: wrap;
}

.hero > .hero-title {
    flex-basis: 100%;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.intro-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: 0;
    flex: 1;
    min-width: 300px;
}

.intro-text p {
    margin-bottom: var(--spacing-md);
}

/* ========================================
   CONTACT FORM
   ======================================== */

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding: 0, var(--spacing-lg);
    flex: 1;
    min-width: 300px;
}

.form-group:nth-child(3),
.form-group:nth-child(4),
.btn-submit {
    grid-column: 1 / -1;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

html[data-theme="light"] .form-group input:focus,
html[data-theme="light"] .form-group textarea:focus {
    box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
}

.btn-submit {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--accent-color);
    color: var(--text-secondary);
    border: none;
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    margin-top: var(--spacing-sm);
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-message {
    grid-column: 1 / -1;
    padding: var(--spacing-sm);
    border-radius: 8px;
    font-size: var(--font-size-base);
    text-align: center;
    display: none;
    margin-top: var(--spacing-sm);
}

.form-message.success {
    display: block;
    background-color: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border: 1px solid #4CAF50;
}

.form-message.error {
    display: block;
    background-color: rgba(244, 67, 54, 0.2);
    color: #F44336;
    border: 1px solid #F44336;
}

html[data-theme="light"] .form-message.success {
    background-color: rgba(76, 175, 80, 0.15);
    color: #2e7d32;
}

html[data-theme="light"] .form-message.error {
    background-color: rgba(244, 67, 54, 0.15);
    color: #c62828;
}

/* ========================================
   PORTFOLIO GRID
   ======================================== */

.portfolio {
    width: 100%;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(6, 180px);
    gap: var(--spacing-md);
    grid-auto-flow: dense;
    justify-content: center;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 1 / 1;
    /*background-color: var(--bg-secondary);*/
}

.portfolio-item.span-2 {
    grid-column: span 2;
    grid-row: span 2;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: transform var(--transition-speed);
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    transition: background var(--transition-speed);
}

.portfolio-item:hover::after {
    background: rgba(0, 0, 0, 0.2);
}

/* ========================================
   LIGHTBOX
   ======================================== */

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-image {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    transition: transform var(--transition-speed);
    z-index: 201;
}

.lightbox-close:hover {
    transform: scale(1.2);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: transform var(--transition-speed);
    z-index: 201;
}

.lightbox-prev {
    left: var(--spacing-md);
}

.lightbox-next {
    right: var(--spacing-md);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    transform: translateY(-50%) scale(1.2);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .header-title {
        flex-basis: 100%;
        order: 2;
    }

    .header-title h1 {
        font-size: var(--font-size-xl);
    }

    .nav-left,
    .nav-right {
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: var(--font-size-base);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .intro-text {
        font-size: var(--font-size-base);
        flex-basis: 100%;
    }

    .contact-form {
        padding: var(--spacing-md);
        flex-basis: 100%;
        grid-template-columns: 1fr;
    }

    .form-group:nth-child(3),
    .form-group:nth-child(4),
    .btn-submit {
        grid-column: 1;
    }

    .portfolio-grid {
        grid-template-columns: repeat(4, 180px);
        gap: var(--spacing-sm);
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 1.5rem;
        padding: var(--spacing-xs);
    }

    .lightbox-close {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .header-title h1 {
        font-size: var(--font-size-lg);
    }

    .hero-title {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-md);
    }

    .intro-text {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
        flex-basis: 100%;
    }

    .contact-form {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        grid-template-columns: 1fr;
        flex-basis: 100%;
    }

    .form-group:nth-child(3),
    .form-group:nth-child(4),
    .btn-submit {
        grid-column: 1;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 180px);
        gap: var(--spacing-xs);
    }

    .portfolio-item.span-2 {
        grid-column: span 2;
        grid-row: span 2;
    }

    .lightbox-image {
        max-width: 95vw;
        max-height: 85vh;
    }
}