/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.15);
    --border: #27272a;
    --success: #22c55e;
    --gradient-1: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 100px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --shadow-sm: 0 4px 20px var(--accent-glow);
    --shadow-md: 0 8px 30px var(--accent-glow);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.3);
    --container-max: 1200px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

::selection {
    background: var(--accent);
    color: var(--text-primary);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-inline: var(--spacing-xl);
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem var(--spacing-xl);
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.nav__logo span {
    font-family: var(--font-mono);
    font-weight: 500;
}

.nav__links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav__links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav__links a:hover {
    color: var(--text-primary);
}

.nav__cta {
    background: var(--gradient-1);
    color: white;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav__cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.nav__lang {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 0.5rem;
}

.nav__lang-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    text-transform: uppercase;
}

.nav__lang-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-color: var(--border);
}

.nav__lang-link--active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-color: var(--accent);
}

.nav__mobile-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.9rem 1.75rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn--primary {
    background: var(--gradient-1);
    color: white;
}

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

.btn--secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn--secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
}

.btn__icon {
    width: 16px;
    height: 16px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem var(--spacing-xl) var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero__container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    width: 100%;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease;
}

.hero__badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero__description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: 1.75rem;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.stat-card__number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-card__label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ==========================================================================
   Section Styles
   ========================================================================== */
.section {
    padding: var(--spacing-4xl) var(--spacing-xl);
}

.section--alt {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section__label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section__title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-md);
}

.section__description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin-bottom: var(--spacing-2xl);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

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

.service-card__icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card__description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: 1.25rem;
}

.service-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Experience Section
   ========================================================================== */
.experience__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.exp-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: 1.75rem;
    transition: transform var(--transition-normal);
}

.exp-card:hover {
    transform: translateY(-2px);
}

.exp-card__industry {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.exp-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.exp-card__description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.exp-card__years {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
}

/* ==========================================================================
   Process Section
   ========================================================================== */
.process__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 2rem;
    right: -1rem;
    width: calc(100% - 4rem);
    height: 2px;
    background: var(--border);
}

.process-step:last-child::after {
    display: none;
}

.process-step__number {
    width: 4rem;
    height: 4rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 auto 1.25rem;
    position: relative;
    z-index: 1;
    transition: border-color var(--transition-normal), background var(--transition-normal);
}

.process-step:hover .process-step__number {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.process-step__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.process-step__description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta {
    padding: var(--spacing-4xl) var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta__content {
    position: relative;
    z-index: 1;
}

.cta__title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.cta__description {
    color: var(--text-secondary);
    font-size: 1.15rem;
    max-width: 500px;
    margin: 0 auto var(--spacing-xl);
}

.cta__email {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--accent);
    display: inline-block;
    margin-top: var(--spacing-lg);
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    padding: var(--spacing-2xl) var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.footer__content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
}

.footer__logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer__text {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

.footer__legal {
    font-size: 0.75rem;
    margin-top: 0.5rem;
    line-height: 1.5;
}

.footer__links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer__links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq {
    padding: 100px var(--spacing-xl);
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.faq .container {
    max-width: 800px;
}

.faq .section__label,
.faq .section__title {
    text-align: center;
}

.faq .section__title {
    margin-bottom: 48px;
}

.faq__grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq__item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq__item:hover {
    border-color: var(--accent);
}

.faq__item[open] {
    border-color: var(--accent);
}

.faq__question {
    padding: 24px 28px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: transparent;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--accent);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.faq__item[open] .faq__question::after {
    transform: rotate(45deg);
}

.faq__answer {
    padding: 0 28px 24px 28px;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* ==========================================================================
   Contact Form
   ========================================================================== */
.contact {
    padding: var(--spacing-4xl) var(--spacing-xl);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.contact__header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.contact__header .section__description {
    margin-left: auto;
    margin-right: auto;
}

.contact__email-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.contact-form {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

.form-group--full {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form-label::after {
    content: '';
}

.form-input,
.form-select,
.form-textarea {
    background: var(--bg-primary) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-lg) !important;
    padding: 1rem 1.25rem !important;
    font-size: 1rem !important;
    font-family: var(--font-primary) !important;
    color: var(--text-primary) !important;
    transition: all 0.2s ease !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted) !important;
    opacity: 1 !important;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--text-muted) !important;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none !important;
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 4px var(--accent-glow) !important;
}

.form-select {
    cursor: pointer !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: right 1rem center !important;
    padding-right: 3rem !important;
}

.form-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem;
}

.form-textarea {
    resize: vertical !important;
    min-height: 140px !important;
    line-height: 1.6 !important;
}

.form-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.form-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 400px;
}

.btn--large {
    padding: 1.125rem 3rem;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
}

/* Form error messages */
.form-error {
    display: none;
    font-size: 0.8rem;
    color: #ef4444;
    margin-top: 0.25rem;
}

.form-input:user-invalid ~ .form-error,
.form-select:user-invalid ~ .form-error,
.form-textarea:user-invalid ~ .form-error {
    display: block;
}

/* Form validation styles */
.form-input:user-invalid,
.form-select:user-invalid,
.form-textarea:user-invalid {
    border-color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.05) !important;
}

.form-input:user-valid:not(:placeholder-shown),
.form-textarea:user-valid:not(:placeholder-shown) {
    border-color: var(--success) !important;
}

/* Required field indicator */
.form-label[for="name"]::after,
.form-label[for="email"]::after,
.form-label[for="service"]::after,
.form-label[for="message"]::after {
    content: '';
    color: #ef4444;
    margin-left: 0.25rem;
}

/* Form card glow effect */
.contact-form:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

/* Success Modal */
.success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}

.success-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    text-align: center;
    max-width: 400px;
    width: 100%;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto 1.5rem;
}

.success-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.success-text {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.success-btn {
    background: var(--gradient-1);
    color: white;
    border: none;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: var(--font-primary);
}

.success-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

/* Button Spinner */
.btn-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

button[type="submit"]:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 968px) {
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__stats {
        max-width: 400px;
        margin: var(--spacing-2xl) auto 0;
    }

    .process__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-step::after {
        display: none;
    }

    .nav__links {
        display: none;
    }

    .nav__mobile-btn {
        display: block;
    }

    .nav__cta {
        display: none;
    }

    .nav__lang {
        margin-left: auto;
        margin-right: 0.5rem;
    }

    .nav__lang-link {
        width: 32px;
        height: 32px;
        font-size: 0.75rem;
    }
}

@media (max-width: 640px) {
    .hero__stats {
        grid-template-columns: 1fr;
    }

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

    .footer__content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

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

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

    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .contact-form {
        padding: var(--spacing-lg);
        margin: 0 calc(-1 * var(--spacing-md));
        border-radius: var(--radius-xl);
    }

    .btn--large {
        width: 100%;
        justify-content: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

@media (prefers-contrast: high) {
    :root {
        --border: #52525b;
        --text-secondary: #d4d4d8;
        --text-muted: #a1a1aa;
    }
}

@media print {
    body::before {
        display: none;
    }

    .nav,
    .hero::before,
    .cta::before {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}