/* Importing Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Variables for design tokens */
:root {
    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transition speeds */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    /* Light Theme Tokens */
    --bg-primary: hsl(220, 20%, 97%);
    --bg-secondary: hsl(0, 0%, 100%);
    --bg-tertiary: hsl(220, 14%, 93%);
    --text-primary: hsl(224, 71%, 4%);
    --text-secondary: hsl(220, 9%, 40%);
    --text-muted: hsl(220, 9%, 55%);
    --accent-color: hsl(245, 92%, 60%);
    --accent-glow: hsla(245, 92%, 60%, 0.15);
    --accent-gradient: linear-gradient(135deg, hsl(245, 92%, 60%), hsl(280, 85%, 55%));
    --card-bg: rgba(255, 255, 255, 0.65);
    --card-border: rgba(255, 255, 255, 0.8);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --glass-blur: blur(12px);
    --input-bg: rgba(255, 255, 255, 0.8);
    --input-border: hsl(220, 14%, 85%);
}

/* Dark Theme Tokens override */
[data-theme="dark"] {
    --bg-primary: hsl(224, 71%, 4%);
    --bg-secondary: hsl(224, 60%, 7%);
    --bg-tertiary: hsl(224, 50%, 10%);
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 75%);
    --text-muted: hsl(215, 16%, 55%);
    --accent-color: hsl(186, 100%, 45%);
    --accent-glow: hsla(186, 100%, 45%, 0.25);
    --accent-gradient: linear-gradient(135deg, hsl(186, 100%, 45%), hsl(263, 90%, 60%));
    --card-bg: rgba(10, 14, 23, 0.45);
    --card-border: rgba(255, 255, 255, 0.05);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --input-bg: rgba(10, 14, 23, 0.6);
    --input-border: rgba(255, 255, 255, 0.1);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

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

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

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

ul {
    list-style: none;
}

/* Background blur decorations */
.blob-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.45;
    mix-blend-mode: multiply;
    animation: blob-float 20s infinite alternate ease-in-out;
    transition: opacity var(--transition-slow);
}

[data-theme="dark"] .blob {
    opacity: 0.15;
    mix-blend-mode: screen;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--accent-gradient);
    animation-duration: 25s;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: linear-gradient(135deg, hsl(280, 85%, 55%), hsl(186, 100%, 45%));
    animation-duration: 30s;
    animation-delay: 2s;
}

.blob-3 {
    top: 40%;
    left: 60%;
    width: 35vw;
    height: 35vw;
    background: linear-gradient(135deg, hsl(320, 90%, 50%), hsl(245, 92%, 60%));
    animation-duration: 22s;
    animation-delay: 5s;
}

@keyframes blob-float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(5%, 10%) scale(1.1); }
    100% { transform: translate(-5%, -5%) scale(0.9); }
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(var(--bg-primary), 0.1);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--card-border);
    transition: background-color var(--transition-normal), border-bottom var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
    display: inline-block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
}

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

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.theme-toggle-btn {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--card-border);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle-btn:hover {
    transform: translateY(-2px);
    background-color: var(--card-border);
}

.theme-toggle-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--text-secondary);
    transition: fill var(--transition-fast), transform var(--transition-normal);
}

.theme-toggle-btn:hover svg {
    fill: var(--text-primary);
}

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

.contact-btn {
    background: var(--accent-gradient);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--accent-glow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    flex-direction: column;
    gap: 6px;
    z-index: 110;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 3px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Container Utility */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Sections Base */
section {
    padding: 8rem 0 4rem;
    position: relative;
}

.section-tag {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 4rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-tagline {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.hero-title span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

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

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    padding: 1rem 2rem;
    border-radius: 14px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-secondary {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: 14px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    background-color: var(--card-border);
    box-shadow: var(--shadow-md);
}

/* Hero visual / Interactive abstract container */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-scene {
    width: 350px;
    height: 350px;
    position: relative;
}

.visual-circle {
    position: absolute;
    top: 5%;
    left: 5%;
    width: 90%;
    height: 90%;
    border-radius: 50%;
    background: var(--accent-gradient);
    opacity: 0.15;
    animation: pulse 4s infinite alternate ease-in-out;
}

.visual-glass-card {
    position: absolute;
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
    transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
    animation: float-card 6s infinite alternate ease-in-out;
}

.card-header-accent {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-dot-group {
    display: flex;
    gap: 6px;
}

.card-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.card-dot:nth-child(1) { background-color: #ff5f56; }
.card-dot:nth-child(2) { background-color: #ffbd2e; }
.card-dot:nth-child(3) { background-color: #27c93f; }

.visual-data-bar {
    height: 6px;
    width: 100%;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    margin-top: 1rem;
    overflow: hidden;
    position: relative;
}

.visual-data-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    width: 70%;
    animation: loading-fill 3s infinite ease-in-out;
}

.visual-badge {
    position: absolute;
    bottom: -10px;
    right: -20px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 1.25rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: perspective(1000px) translateZ(40px) rotateY(-15deg);
    animation: float-badge 6s infinite alternate-reverse ease-in-out;
}

.badge-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
}

.badge-text {
    font-size: 0.8rem;
    font-weight: 700;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.1; }
    100% { transform: scale(1.05); opacity: 0.25; }
}

@keyframes float-card {
    0% { transform: perspective(1000px) rotateY(-15deg) rotateX(10deg) translateY(0); }
    100% { transform: perspective(1000px) rotateY(-12deg) rotateX(8deg) translateY(-15px); }
}

@keyframes float-badge {
    0% { transform: perspective(1000px) translateZ(40px) rotateY(-15deg) translateY(0); }
    100% { transform: perspective(1000px) translateZ(40px) rotateY(-12deg) translateY(-10px); }
}

@keyframes loading-fill {
    0% { width: 10%; }
    50% { width: 85%; }
    100% { width: 10%; }
}

/* Services / Features Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--accent-color), 0.2);
}

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

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background-color: var(--bg-tertiary);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    transition: background-color var(--transition-fast), transform var(--transition-normal);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--accent-color);
    transition: fill var(--transition-fast);
}

.service-card:hover .service-icon {
    background: var(--accent-gradient);
    transform: rotate(5deg);
}

.service-card:hover .service-icon svg {
    fill: white;
}

.service-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.service-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Portfolio Section */
.portfolio-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
    background-color: var(--card-border);
}

.filter-btn.active {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.portfolio-item {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), opacity 0.4s ease;
}

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

.portfolio-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background-color: var(--bg-tertiary);
}

.portfolio-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.2) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.04));
    background-size: 100% 3px, 5px 100%;
    pointer-events: none;
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-image-wrapper::after {
    opacity: 0.35;
}

/* Fallback SVG drawings for images if generate_image isn't run */
.portfolio-svg-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--card-border));
}

.portfolio-svg-placeholder svg {
    width: 50px;
    height: 50px;
    opacity: 0.3;
    transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-svg-placeholder svg {
    transform: scale(1.1) rotate(2deg);
}

.portfolio-info {
    padding: 2rem;
}

.portfolio-category {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-color);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.portfolio-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-top: 0.5rem;
}

.portfolio-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform var(--transition-fast);
}

.portfolio-link:hover svg {
    transform: translateX(4px);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: var(--bg-tertiary);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    fill: var(--accent-color);
}

.contact-details h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Contact Form styling */
.contact-form-container {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: var(--glass-blur);
    padding: 3.5rem 3rem;
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border-radius: 14px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-label {
    position: absolute;
    left: 1.25rem;
    top: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    pointer-events: none;
    transition: all var(--transition-fast);
}

/* Form states and floating labels */
.form-input:focus,
.form-input:not(:placeholder-shown) {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-glow);
    background-color: var(--bg-secondary);
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
    top: -0.65rem;
    left: 0.75rem;
    font-size: 0.8rem;
    font-weight: 700;
    background: var(--bg-secondary);
    padding: 0 0.5rem;
    border-radius: 4px;
    color: var(--accent-color);
}

/* Dynamic error status UI */
.form-input.error {
    border-color: hsl(0, 84%, 60%);
    box-shadow: 0 0 0 4px hsla(0, 84%, 60%, 0.15);
}

.form-input.error ~ .form-label {
    color: hsl(0, 84%, 60%);
}

.form-feedback {
    font-size: 0.8rem;
    color: hsl(0, 84%, 60%);
    margin-top: 0.35rem;
    display: none;
}

.form-input.error ~ .form-feedback {
    display: block;
}

.form-submit-btn {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    padding: 1.1rem;
    border-radius: 14px;
    background: var(--accent-gradient);
    color: white;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.form-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

.form-submit-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    transition: transform var(--transition-fast);
}

.form-submit-btn:hover svg {
    transform: translate(3px, -3px);
}

.form-success-msg {
    display: none;
    text-align: center;
    padding: 2rem 0;
}

.form-success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: hsla(142, 72%, 29%, 0.15);
    color: hsl(142, 72%, 29%);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 1.5rem;
}

.form-success-icon svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.form-success-msg h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.form-success-msg p {
    color: var(--text-secondary);
}

/* Footer Section */
footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--card-border);
    padding: 4rem 0 2rem;
    transition: background-color var(--transition-normal), border-top var(--transition-normal);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-desc {
    color: var(--text-secondary);
    max-width: 320px;
    font-size: 0.95rem;
}

.footer-links-col h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links-col ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links-col a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-links-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--card-border);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background-color: var(--bg-primary);
    border: 1px solid var(--card-border);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    transform: translateY(-2px);
    background-color: var(--accent-color);
    color: white;
}

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

/* Animations for scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile & Tablet Styles */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* Stats and Form layout systems */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.mobile-only-btn {
    display: none !important;
}

@media (max-width: 768px) {
    section {
        padding: 6rem 0 3rem;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--bg-secondary);
        border-left: 1px solid var(--card-border);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        z-index: 105;
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-normal);
        padding: 2rem;
    }

    .nav-menu.active {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

    /* Hamburger active animations */
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -7px);
    }

    .hero-title {
        font-size: 3.25rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: 2.5rem 1.5rem;
    }

    .nav-actions .contact-btn {
        display: none !important;
    }

    .mobile-only-btn {
        display: block !important;
    }
}

@media (max-width: 576px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2.1rem;
    }

    .visual-scene {
        width: 290px;
        height: 290px;
    }

    .visual-glass-card {
        padding: 1.5rem;
    }
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50%;
    text-align: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.whatsapp-float:hover {
    background-color: #20ba5a;
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

/* Tooltip for WhatsApp */
.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--card-border);
    transform: translateX(10px);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* Pulsing effect */
.whatsapp-float::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #25d366;
    z-index: -1;
    opacity: 0.4;
    animation: whatsapp-pulse 2s infinite;
}

@keyframes whatsapp-pulse {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(1.4); opacity: 0; }
}

@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
    .whatsapp-tooltip {
        display: none;
    }
}