/* ===== VARIABLES CSS ===== */
:root {
    /* Colors Light Mode */
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent-color: #8b5cf6;
    --accent-light: #a78bfa;

    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;

    --text-color: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;

    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --header-height: 4rem;
    --container-width: 1200px;
    --section-padding: 5rem 0;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --primary-color: #818cf8;
    --primary-light: #a5b4fc;
    --primary-dark: #6366f1;
    --accent-color: #a78bfa;
    --accent-light: #c4b5fd;

    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;

    --text-color: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;

    --border-color: #334155;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

body.modal-open {
    overflow: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===== UTILITIES ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}

.section__title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== BUTTONS ===== */
.button {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.button-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.button-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.button-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.button-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.button-full {
    width: 100%;
}

.button-loading .button-text {
    display: inline;
}

.button-loading .button-loading {
    display: none;
}

.button.loading .button-text {
    display: none;
}

.button.loading .button-loading {
    display: inline;
}

/* ===== HEADER / NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scroll-header {
    box-shadow: var(--shadow-md);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-color);
}

.nav__logo span {
    color: var(--primary-color);
}

.nav__list {
    display: flex;
    gap: 2rem;
}

.nav__link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--primary-color);
}

.nav__link:hover::after,
.nav__link.active-link::after {
    width: 100%;
}

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

.theme-toggle {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    color: var(--text-color);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(15deg);
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

.nav__toggle,
.nav__close {
    display: none;
    cursor: pointer;
    color: var(--text-color);
}

/* ===== HOME SECTION ===== */
.home {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-secondary) 100%);
}

.home__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.home__content {
    animation: fadeInUp 1s ease;
}

.home__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.home__subtitle {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.home__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.home__buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.home__image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease;
}

.home__blob {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    animation: morph 8s ease-in-out infinite;
    box-shadow: var(--shadow-xl);
}

@keyframes morph {
    0%, 100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }
    50% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--bg-color);
}

.about__container {
    max-width: 800px;
    margin: 0 auto;
}

.about__content {
    text-align: center;
}

.about__text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--bg-secondary);
}

.skills__container {
    display: grid;
    gap: 3rem;
}

.skills__category {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
}

.skills__category-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-xl);
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.skills__category-title svg {
    color: var(--primary-color);
}

.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 0.75rem;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.skill-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 1rem;
    color: var(--text-color);
}

.skill-description {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    width: var(--progress);
    border-radius: 4px;
    transition: width 1s ease;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    background: var(--bg-color);
}

.projects__filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.projects__carousel {
    position: relative;
    overflow: hidden;
    padding: 1rem 4rem;
    margin: 0 -2rem;
}

.carousel__wrapper {
    overflow: hidden;
}

.carousel__container {
    display: flex;
    gap: 2rem;
    transition: transform var(--transition-slow);
    align-items: stretch;
}

.project-card {
    flex: 0 0 calc(33.333% - 1.34rem);
    background: var(--bg-secondary);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    width: 100%;
    height: 250px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder {
    font-size: 4rem;
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: var(--font-size-xl);
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    flex: 1;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: 1rem;
    font-size: var(--font-size-sm);
}

.project-link {
    color: var(--primary-color);
    font-weight: 600;
    transition: color var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-size: var(--font-size-base);
    margin-top: auto;
}

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

.carousel__btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--bg-color);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all var(--transition-normal);
    color: var(--text-color);
}

.carousel__btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel__btn--prev {
    left: 0.5rem;
}

.carousel__btn--next {
    right: 0.5rem;
}

.carousel__dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.carousel__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel__dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 5px;
}

.project-card.hide {
    display: none;
}

/* ===== PROJECT MODAL ===== */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.project-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    background: var(--bg-color);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
    animation: slideUp 0.4s ease;
    z-index: 10000;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    z-index: 10;
    cursor: pointer;
}

.modal-close:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: 3rem;
}

.modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.modal-tags {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.modal-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--primary-color);
    border-radius: 2rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.modal-section {
    margin-bottom: 2.5rem;
}

.modal-section-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modal-section-title svg {
    color: var(--primary-color);
}

.modal-description {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.modal-features {
    list-style: none;
    display: grid;
    gap: 1rem;
}

.modal-feature {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.75rem;
    transition: all var(--transition-normal);
}

.modal-feature:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.modal-feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.modal-feature-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-technologies {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.modal-tech {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.75rem;
    transition: all var(--transition-normal);
}

.modal-tech:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.modal-tech-icon {
    font-size: 2rem;
}

.modal-tech-name {
    font-weight: 600;
    color: var(--text-color);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.modal-btn {
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.modal-btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-color);
}

.modal-btn-secondary:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--bg-secondary);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact__form-wrapper {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
}

.form__group {
    margin-bottom: 1.5rem;
}

.form__label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form__input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form__input.error {
    border-color: #ef4444;
}

.form__input.success {
    border-color: #10b981;
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.form__error {
    display: block;
    color: #ef4444;
    font-size: var(--font-size-sm);
    margin-top: 0.25rem;
    min-height: 1.25rem;
}

.form__message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form__message.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form__message.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

.contact__info {
    display: flex;
    flex-direction: column;
}

.contact__info-title {
    font-size: var(--font-size-2xl);
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact__info-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact__links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact__link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.75rem;
    transition: all var(--transition-normal);
    color: var(--text-secondary);
}

.contact__link:hover {
    transform: translateX(5px);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.contact__link svg {
    flex-shrink: 0;
    color: var(--primary-color);
}

.discord-link {
    position: relative;
    cursor: default;
}

.discord-link:hover {
    transform: none;
}

.copy-btn {
    margin-left: auto;
    padding: 0.5rem;
    border-radius: 0.375rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: var(--primary-color);
    color: white;
}

.copy-btn.copied {
    background: #10b981;
    color: white;
}

.visit-counter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.visit-counter svg {
    color: var(--primary-color);
}

#visit-count {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
}