/* 
   Roveus Tech Landing Page Styles
   Premium, Apple-inspired design with clean aesthetics and elegant typography
*/

/* Base Styles and Reset */
:root {
    --primary-color: #2a2a2a;
    --secondary-color: #86868b;
    --accent-color: #a1a1a6;
    --button-color: #2a2a2a;
    --button-text: #ffffff;
    --dark-bg: #000000;
    --darker-bg: #111111;
    --light-text: #ffffff;
    --gray-text: #86868b;
    --card-bg: #1d1d1f;
    --border-color: #333336;
    --transition-speed: 0.3s;
    --section-spacing: 120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'SF Pro Display', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark-bg);
    color: var(--light-text);
    line-height: 1.47059;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'SF Pro Display', 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -0.022em;
}

h1 {
    font-size: 4rem;
}

h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 500;
}

h3 {
    font-size: 1.75rem;
    font-weight: 500;
}

p {
    margin-bottom: 1.2rem;
    color: var(--gray-text);
    font-size: 1.1rem;
    letter-spacing: -0.011em;
}

a {
    text-decoration: none;
    color: var(--light-text);
    transition: color var(--transition-speed);
}

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

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: var(--section-spacing) 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 980px;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: all var(--transition-speed);
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    min-width: 28px;
    position: relative;
}

.btn-primary {
    background: linear-gradient(145deg, #444444, #2a2a2a);
    color: var(--button-text);
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.2),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(145deg, #505050, #333333);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.2),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.btn-primary:active {
    background: linear-gradient(145deg, #2a2a2a, #444444);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.2),
                inset 1px 1px 1px rgba(0, 0, 0, 0.2),
                inset -1px -1px 1px rgba(255, 255, 255, 0.1);
    transform: translateY(1px);
}

.btn-secondary {
    background: linear-gradient(145deg, #333333, #222222);
    color: var(--light-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-left: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.1),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}

.btn-secondary:hover {
    background: linear-gradient(145deg, #3a3a3a, #2a2a2a);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.1),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.btn-secondary:active {
    background: linear-gradient(145deg, #222222, #333333);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.2),
                inset 1px 1px 1px rgba(0, 0, 0, 0.2),
                inset -1px -1px 1px rgba(255, 255, 255, 0.05);
    transform: translateY(1px);
}

.btn-outline {
    background: transparent;
    color: var(--light-text);
    border: none;
    font-size: 1rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
}

.btn-outline:hover {
    color: #a1a1a6;
}

.btn-outline::after {
    content: '→';
    margin-left: 6px;
    font-size: 1.1em;
    transition: transform 0.2s ease;
}

.btn-outline:hover::after {
    transform: translateX(3px);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    transition: all var(--transition-speed);
}

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

.logo h1 {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--light-text);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--gray-text);
    transition: color var(--transition-speed);
}

nav ul li a:hover {
    color: var(--light-text);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--dark-bg);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 30%, rgba(25, 25, 25, 1), transparent 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-content h1 {
    margin-bottom: 20px;
    font-size: 5rem;
    line-height: 1.05;
    font-weight: 600;
    letter-spacing: -0.015em;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 40px;
    color: var(--gray-text);
    font-weight: 400;
    letter-spacing: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Values Section */
.values {
    background-color: var(--dark-bg);
    text-align: center;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 70px;
}

.value-card {
    background: transparent;
    padding: 30px 20px;
    transition: transform var(--transition-speed);
    text-align: center;
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--light-text);
    background: linear-gradient(145deg, #444444, #2a2a2a);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.2),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
}

.value-card h3 {
    margin-bottom: 15px;
}

/* Projects Section */
.projects {
    text-align: center;
    background-color: var(--darker-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 60px;
    margin-top: 70px;
}

.project-card {
    background: transparent;
    overflow: hidden;
    transition: transform var(--transition-speed);
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 250px;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 24px;
}

.project-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--light-text);
    background: linear-gradient(145deg, #444444, #2a2a2a);
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2), 
                inset 1px 1px 1px rgba(255, 255, 255, 0.2),
                inset -1px -1px 1px rgba(0, 0, 0, 0.2);
}

.project-content h3 {
    margin-bottom: 15px;
}

.project-content p {
    margin-bottom: 25px;
}

/* About Section */
.about {
    background-color: var(--dark-bg);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.25rem;
    margin-bottom: 24px;
    line-height: 1.4;
}


/* Footer */
footer {
    background-color: var(--darker-bg);
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo h2 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    font-weight: 500;
    text-align: left;
}

.footer-logo p {
    font-size: 0.8rem;
}

.footer-links ul {
    display: flex;
}

.footer-links ul li {
    margin-left: 30px;
}

.footer-links ul li a {
    font-size: 0.8rem;
    color: var(--gray-text);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--gray-text);
}

/* Responsive Styles */
@media (max-width: 992px) {
    h1 {
        font-size: 3.5rem;
    }
    
    h2 {
        font-size: 2.4rem;
    }
    
    .hero-content h1 {
        font-size: 4rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    :root {
        --section-spacing: 80px;
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
    
    .hero-content p {
        font-size: 1.3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-secondary {
        margin-left: 0;
        margin-top: 15px;
    }
    
    nav {
        display: none;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
        max-width: 350px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        margin-top: 20px;
    }
    
    .footer-links ul {
        justify-content: center;
    }
}