/* ========================================================================
   Bruna Development - Premium Portfolio
   Modern design system with glassmorphism and micro-animations
   ======================================================================== */

/* ========================================================================
   Design Tokens
   ======================================================================== */
:root {
    /* Color Palette - Deep Space Theme */
    --color-bg-primary: #0a0a1a;
    --color-bg-secondary: #0f0f23;
    --color-bg-tertiary: #1a1a35;

    /* Accent Colors */
    --color-accent-primary: #667eea;
    --color-accent-secondary: #764ba2;
    --color-accent-tertiary: #00d4ff;
    --color-accent-ai: #a855f7;
    --color-accent-success: #10b981;
    --color-accent-warning: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --gradient-ai: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #00d4ff 100%);

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
}

/* ========================================================================
   Base Styles
   ======================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family-primary);
    background-color: var(--color-bg-primary);
    color: #e5e7eb;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Glow Effect */
.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%,
            rgba(102, 126, 234, 0.1) 0%,
            rgba(118, 75, 162, 0.05) 25%,
            transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: rotate-glow 30s linear infinite;
}

@keyframes rotate-glow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ========================================================================
   Typography
   ======================================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: #ffffff;
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

p {
    color: #d1d5db;
}

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

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 8s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* ========================================================================
   Layout Components
   ======================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-padding {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    margin: var(--spacing-md) auto 0;
    border-radius: 2px;
}

/* ========================================================================
   Header & Navigation
   ======================================================================== */
.glass-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #ffffff;
}

.logo-img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
}

nav ul {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    align-items: center;
}

nav a {
    font-weight: 500;
    position: relative;
    padding: var(--spacing-xs) 0;
}

nav a:not(.btn-primary):hover {
    color: var(--color-accent-primary);
}

nav a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

nav a:not(.btn-primary):hover::after {
    width: 100%;
}

/* ========================================================================
   Buttons
   ======================================================================== */
.btn-primary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: #ffffff;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: #ffffff;
    border: 2px solid var(--color-accent-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--color-accent-tertiary);
    color: var(--color-accent-tertiary);
    transform: translateY(-2px);
}

.btn-primary.big,
.btn-secondary.big {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ========================================================================
   Glass Card Component
   ======================================================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

/* ========================================================================
   Hero Section
   ======================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 80px;
}

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

.hero h1 {
    margin-bottom: var(--spacing-md);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: var(--font-size-xl);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    color: #d1d5db;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Fade-in animations */
.fade-in-up {
    animation: fadeInUp 1s ease-out;
}

.fade-in-up.delay-1 {
    animation-delay: 0.2s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.fade-in-up.delay-2 {
    animation-delay: 0.4s;
    opacity: 0;
    animation-fill-mode: forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================================================
   About Section
   ======================================================================== */
.about {
    background: var(--color-bg-secondary);
    position: relative;
}

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

.about-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-text strong {
    color: var(--color-accent-primary);
    font-weight: 600;
}

/* ========================================================================
   Skills Section
   ======================================================================== */
.skills {
    position: relative;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
}

.skill-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-primary);
}

.skill-card ul {
    list-style: none;
}

.skill-card li {
    padding: var(--spacing-xs) 0;
    color: #d1d5db;
    position: relative;
    padding-left: var(--spacing-md);
}

.skill-card li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
    font-weight: bold;
}

/* ========================================================================
   Projects Section
   ======================================================================== */
.projects {
    background: var(--color-bg-secondary);
    position: relative;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.project-header h3 {
    flex: 1;
    color: #ffffff;
}

.project-card p {
    margin-bottom: var(--spacing-md);
    color: #d1d5db;
    flex-grow: 1;
}

/* Project Badges */
.badge {
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.badge.azure {
    background: linear-gradient(135deg, #0078d4 0%, #00a4ef 100%);
    color: #ffffff;
}

.badge.ai {
    background: var(--gradient-ai);
    color: #ffffff;
}

.badge.tool {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
}

.badge.api {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #ffffff;
}

.badge.legacy {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #ffffff;
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.tech-tags li {
    padding: 0.4rem 0.8rem;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-accent-primary);
    font-weight: 500;
    transition: all var(--transition-base);
}

.tech-tags li:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--color-accent-primary);
    transform: translateY(-2px);
}

/* Project Links */
.project-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
}

.link-btn {
    flex: 1;
    padding: var(--spacing-sm);
    text-align: center;
    background: var(--gradient-primary);
    color: #ffffff;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.link-btn.outline {
    background: transparent;
    border: 2px solid var(--color-accent-primary);
}

.link-btn.outline:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--color-accent-tertiary);
}

/* ========================================================================
   Contact Section
   ======================================================================== */
.contact {
    position: relative;
    text-align: center;
}

.contact p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    color: #d1d5db;
}

.contact-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.center-text {
    text-align: center;
}

/* ========================================================================
   Footer
   ======================================================================== */
footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
    color: #9ca3af;
}

footer p {
    color: #9ca3af;
}

/* ========================================================================
   Responsive Design
   ======================================================================== */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-3xl: 1.5rem;
        --font-size-xl: 1.125rem;
    }

    .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }

    .hero {
        min-height: 80vh;
        padding-top: 120px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: var(--font-size-base);
    }

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

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

    .contact-links {
        flex-direction: column;
    }

    .btn-primary.big,
    .btn-secondary.big {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .section-padding {
        padding: var(--spacing-2xl) 0;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
    }
}

/* ========================================================================
   Accessibility & Performance
   ======================================================================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}