/* 
======================
    GOOGLE FONTS
====================== 
*/
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* 
======================
    CSS VARIABLES
====================== 
*/
:root {
    /* Colors */
    --color-primary: #3563E9;
    --color-primary-light: #5E82F0;
    --color-primary-dark: #2447B9;
    
    --color-secondary: #2DD4BF;
    --color-secondary-light: #5EEAD4;
    --color-secondary-dark: #14B8A6;
    
    --color-accent: #F59E0B;
    --color-accent-light: #FBBF24;
    --color-accent-dark: #D97706;
    
    --color-success: #10B981;
    --color-warning: #FBBF24;
    --color-error: #EF4444;
    
    --color-dark: #111827;
    --color-dark-2: #1F2937;
    --color-dark-3: #374151;
    
    --color-light: #F9FAFB;
    --color-light-2: #F3F4F6;
    --color-light-3: #E5E7EB;
    
    --color-text-dark: #1F2937;
    --color-text-light: #F9FAFB;
    --color-text-muted: #9CA3AF;
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;  /* 4px */
    --space-sm: 0.5rem;   /* 8px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 1.5rem;   /* 24px */
    --space-xl: 2rem;     /* 32px */
    --space-2xl: 2.5rem;  /* 40px */
    --space-3xl: 3rem;    /* 48px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;  /* 4px */
    --radius-md: 0.5rem;   /* 8px */
    --radius-lg: 0.75rem;  /* 12px */
    --radius-xl: 1rem;     /* 16px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-drawer: 10;
    --z-sticky: 20;
    --z-header: 30;
    --z-dropdown: 40;
    --z-modal: 50;
    --z-toast: 60;
    
    /* Container max-width */
    --container-width-sm: 640px;
    --container-width-md: 768px;
    --container-width-lg: 1024px;
    --container-width-xl: 1280px;
}

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

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
    scroll-padding-top: 7.2rem;
}

body {
    font-family: var(--font-primary);
    font-size: 1.6rem;
    line-height: 1.5;
    color: var(--color-text-light);
    background-color: var(--color-dark);
    overflow-x: hidden;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
}

button {
    cursor: pointer;
    background: none;
    border: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

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

section {
    padding: 10rem 0;
}

.container {
    width: 90%;
    max-width: var(--container-width-xl);
    margin: 0 auto;
}

/* 
======================
    UTILITY CLASSES
====================== 
*/
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-dark { color: var(--color-text-dark); }
.text-light { color: var(--color-text-light); }
.text-muted { color: var(--color-text-muted); }

.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-accent { background-color: var(--color-accent); }
.bg-dark { background-color: var(--color-dark); }
.bg-dark-2 { background-color: var(--color-dark-2); }
.bg-light { background-color: var(--color-light); }
.bg-light-2 { background-color: var(--color-light-2); }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* 
======================
    HEADER & NAVIGATION
====================== 
*/
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 7.2rem;
    z-index: var(--z-header);
    background-color: rgba(31, 41, 55, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.header.scrolled {
    background-color: rgba(17, 24, 39, 0.95);
    box-shadow: var(--shadow-md);
    height: 6.4rem;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.1rem;
    position: relative;
    display: inline-block;
}

.logo::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-primary);
    transform: scaleX(0.3);
    transform-origin: bottom right;
    transition: transform var(--transition-normal);
}

.logo:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.navbar {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-fast);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.menu-toggle {
    display: none;
    position: relative;
    width: 3rem;
    height: 2.4rem;
    z-index: 100;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-light);
    position: absolute;
    transition: all var(--transition-fast);
}

.menu-icon {
    top: 50%;
    transform: translateY(-50%);
}

.menu-icon::before {
    content: '';
    top: -8px;
}

.menu-icon::after {
    content: '';
    bottom: -8px;
}

.menu-toggle.active .menu-icon {
    background-color: transparent;
}

.menu-toggle.active .menu-icon::before {
    top: 0;
    transform: rotate(45deg);
    background-color: var(--color-primary);
}

.menu-toggle.active .menu-icon::after {
    bottom: 0;
    transform: rotate(-45deg);
    background-color: var(--color-primary);
}

/* 
======================
    HERO SECTION
====================== 
*/
.hero {
    padding-top: 8rem;
    padding-bottom: 10rem;
    background-color: var(--color-dark);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: -20%;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.1) 0%, rgba(17, 24, 39, 0) 70%);
    z-index: 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: 5.6rem;
    line-height: 1.1;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.hero-role {
    font-size: 2.4rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

.hero-role span {
    color: var(--color-primary);
    position: relative;
}

.hero-description {
    font-size: 1.6rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    max-width: 60ch;
}

.hero-actions {
    margin-top: var(--space-2xl);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    align-items: center;
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4.4rem;
    height: 4.4rem;
    border-radius: 50%;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    font-size: 1.8rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-primary);
    z-index: -1;
    transform: scale(0);
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.social-link:hover {
    color: var(--color-text-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(53, 99, 233, 0.3);
}

.social-link:hover::before {
    transform: scale(1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 1.2rem 2.4rem;
    font-size: 1.6rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(53, 99, 233, 0.3);
}

.btn i {
    font-size: 1.4rem;
    transition: transform var(--transition-fast);
}

.btn:hover i {
    transform: translateX(3px);
}

.hero-image {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image img {
    width: 80%;
    max-width: 40rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: floatAnimation 4s ease-in-out infinite;
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.2) 0%, rgba(17, 24, 39, 0) 70%);
    border-radius: var(--radius-lg);
    z-index: -1;
}

@keyframes floatAnimation {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0);
    }
}

/* 
======================
    SECTION COMMON STYLES
====================== 
*/
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    position: relative;
    display: inline-block;
}

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

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: 1.8rem;
    color: var(--color-text-muted);
    max-width: 60ch;
    margin: 0 auto;
}

/* 
======================
    SERVICES SECTION
====================== 
*/
.services {
    background-color: var(--color-dark-2);
    position: relative;
    overflow: hidden;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10%;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.05) 0%, rgba(17, 24, 39, 0) 70%);
    z-index: 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: var(--space-xl);
}

.service-card {
    background-color: var(--color-dark);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right bottom, rgba(53, 99, 233, 0.05), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 6rem;
    height: 6rem;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.service-icon i {
    font-size: 2.4rem;
    color: var(--color-text-light);
}

.service-title {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-light);
}

.service-description {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.service-link i {
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

.service-link:hover {
    color: var(--color-primary-light);
}

.service-link:hover i {
    transform: translateX(4px);
}

/* 
======================
    PORTFOLIO SECTION
====================== 
*/
.portfolio {
    background-color: var(--color-dark);
    position: relative;
    overflow: hidden;
}

.portfolio::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -10%;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.05) 0%, rgba(17, 24, 39, 0) 70%);
    z-index: 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
    gap: var(--space-xl);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    z-index: 1;
    height: 25rem;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(17, 24, 39, 0.9), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-xl);
    opacity: 0;
    transition: all var(--transition-normal);
}

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

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-title {
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.portfolio-description {
    font-size: 1.4rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.portfolio-icon {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    width: 4rem;
    height: 4rem;
    background-color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}

.portfolio-item:hover .portfolio-icon {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-icon i {
    font-size: 1.6rem;
    color: var(--color-text-light);
}

/* 
======================
    CONTACT SECTION
====================== 
*/
.contact {
    background-color: var(--color-dark-2);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.05) 0%, rgba(17, 24, 39, 0) 70%);
    z-index: 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.contact-icon {
    width: 5rem;
    height: 5rem;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 2rem;
    color: var(--color-text-light);
}

.contact-details h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.contact-details p {
    font-size: 1.5rem;
    color: var(--color-text-muted);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    background-color: var(--color-dark);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    position: relative;
}

.form-control {
    width: 100%;
    padding: 1.4rem 1.6rem;
    background-color: var(--color-dark-3);
    color: var(--color-text-light);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    transition: all var(--transition-fast);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

.form-control:focus {
    box-shadow: 0 0 0 2px var(--color-primary);
}

textarea.form-control {
    resize: vertical;
    min-height: 15rem;
}

/* 
======================
    FOOTER
====================== 
*/
.footer {
    background-color: var(--color-dark);
    padding: var(--space-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    font-size: 1.5rem;
    color: var(--color-text-muted);
}

.back-to-top {
    width: 4.4rem;
    height: 4.4rem;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transition: all var(--transition-fast);
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(53, 99, 233, 0.3);
}

/* 
======================
    ANIMATION UTILITIES
====================== 
*/
[data-reveal] {
    opacity: 0;
    transition: transform 1s ease, opacity 1s ease;
}

[data-reveal="left"] {
    transform: translateX(-50px);
}

[data-reveal="right"] {
    transform: translateX(50px);
}

[data-reveal="up"] {
    transform: translateY(50px);
}

[data-reveal="down"] {
    transform: translateY(-50px);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translate(0);
}

/* 
======================
    RESPONSIVE DESIGN
====================== 
*/
@media screen and (max-width: 1200px) {
    html {
        font-size: 60%;
    }
    
    .hero-container {
        gap: var(--space-lg);
    }
}

@media screen and (max-width: 992px) {
    html {
        font-size: 58%;
    }
    
    .hero-title {
        font-size: 4.8rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contact-info {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
    }
    
    .contact-item {
        flex: 0 0 calc(50% - var(--space-lg));
    }
}

@media screen and (max-width: 768px) {
    html {
        font-size: 55%;
    }
    
    section {
        padding: 7rem 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--color-dark-2);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: var(--space-3xl);
        gap: var(--space-xl);
        z-index: var(--z-drawer);
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-list.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 2rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image {
        order: 1;
        justify-content: center;
        margin-bottom: var(--space-2xl);
    }
    
    .hero-description {
        margin: 0 auto var(--space-md);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .services-grid, .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex: 0 0 100%;
    }
}

@media screen and (max-width: 576px) {
    .nav-list {
        width: 100%;
    }
    
    .hero-title {
        font-size: 3.6rem;
    }
    
    .hero-role {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--space-lg);
    }
    
    .section-title {
        font-size: 3.2rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: var(--space-lg);
    }
}