* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg-dark: #0a0e1a;
    --color-bg-charcoal: #1a1f2e;
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-accent: rgba(255, 255, 255, 0.9);
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    position: relative;
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
}

/* Background */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-charcoal) 100%);
    overflow: hidden;
}

.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(30, 40, 60, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(20, 30, 50, 0.2) 0%, transparent 50%);
    animation: ambientShift 20s ease-in-out infinite;
}

@keyframes ambientShift {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@media (prefers-reduced-motion: reduce) {
    .background-overlay {
        animation: none;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    z-index: 10;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.content-container {
    text-align: center;
    max-width: 800px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

/* Typography */
.headline {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--color-text-primary);
    margin: 0;
    opacity: 1;
    animation: fadeInUp 1s var(--transition-smooth) 0.2s;
    position: relative;
    z-index: 1;
}

.subheadline {
    font-size: clamp(0.875rem, 2vw, 1.125rem);
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0;
    opacity: 1;
    animation: fadeInUp 1s var(--transition-smooth) 0.4s;
    position: relative;
    z-index: 1;
}

@keyframes fadeInUp {
    from {
        opacity: 0.3;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .headline,
    .subheadline {
        animation: none;
        opacity: 1;
    }
}

/* Contact Section */
.contact-section {
    margin-top: 1rem;
    opacity: 1;
    animation: fadeInUp 1s var(--transition-smooth) 0.6s;
    position: relative;
    z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
    .contact-section {
        animation: none;
        opacity: 1;
    }
}

.contact-trigger {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-secondary);
    font-size: clamp(1.3125rem, 2.25vw, 1.5rem);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    border-radius: 4px;
}

.contact-trigger:hover {
    color: var(--color-accent);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.02);
}

.contact-trigger:active {
    transform: scale(0.98);
}

.contact-trigger.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Email Form */
.email-form-container {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-smooth);
    margin-top: 0;
}

.email-form-container.visible {
    max-height: 400px;
    margin-top: 1.5rem;
}

.email-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 700px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.email-form-container.visible .email-form {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
}

#nameInput,
#emailInput,
#messageInput {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    padding: 0.75rem 1rem;
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-family: inherit;
    font-weight: 300;
    color: var(--color-text-primary);
    width: 100%;
    outline: none;
    transition: all var(--transition-fast);
}

#nameInput,
#emailInput {
    resize: none;
}

#messageInput {
    resize: vertical;
}


#messageInput {
    min-height: 100px;
    font-family: inherit;
}

#nameInput::placeholder,
#emailInput::placeholder,
#messageInput::placeholder {
    color: var(--color-text-secondary);
}


#nameInput:focus,
#emailInput:focus,
#messageInput:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.submit-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 0.75rem 1.5rem;
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-family: inherit;
    font-weight: 300;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    margin-top: 0.25rem;
}

.submit-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.submit-btn:active {
    transform: scale(0.98);
}

/* Responsive Design */
@media (max-width: 768px) {
    .content-container {
        gap: 1.5rem;
    }
    
    .headline {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }
    
    .subheadline {
        font-size: clamp(0.8125rem, 3vw, 1rem);
        padding: 0 1rem;
    }
    
    .email-form {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 1.5rem;
    }
    
    .content-container {
        gap: 1.25rem;
    }
}

/* Focus styles for accessibility */
.contact-trigger:focus-visible,
#nameInput:focus-visible,
#emailInput:focus-visible,
#messageInput:focus-visible,
.submit-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}


.background-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    z-index: 0;
}