/* ========================================
   1. GLOBAL SETUP & CSS-VARIABLER
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --font-family-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    
    --font-family-base: 'Inter', var(--font-family-system);
    --font-family-heading: 'Inter', var(--font-family-system);

    /* --- FÄRGPALETT (Ljust läge) --- */
    --color-text: #2d3748;            
    --color-bg: #ffffff;             
    --color-primary: #2b6cb0;        
    --color-primary-hover: #2c5282;  
    --color-secondary: #e2e8f0;      
    --color-secondary-hover: #cbd5e0;
    --color-border: #cbd5e0;         
    --color-card-bg: #f7fafc; 
    
    /* KORT-GRADIENT (Ljust) */
    --color-card-grad-start: #dbeafe; 
    --color-card-grad-end: #ffffff;   
    
    /* BADGE-FÄRGER (Ljust) */
    --color-badge-bg: #ffffff;
    --color-badge-border: #e2e8f0;
    --color-badge-text: #2d3748;

    --color-focus-ring: #4299e1;     

    /* Effekter */
    --color-bg-transparent: rgba(255, 255, 255, 0.85); 
    --color-shadow: rgba(45, 55, 72, 0.1); 
    --color-shadow-hover: rgba(45, 55, 72, 0.15);
    
    /* Textskugga för rubriker (Ljust) */
    --text-shadow: 0 2px 4px rgba(0,0,0,0.05);

    /* Avstånd */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    --border-radius: 12px;

    /* Skuggor */
    --shadow-sm: 0 2px 4px var(--color-shadow);
    --shadow-md: 0 8px 16px var(--color-shadow);
    --shadow-lg: 0 15px 30px var(--color-shadow-hover);
    
    /* Animationer / Map */
    --map-opacity: 0.15;
    
    --transition-fast: 0.2s ease-in-out;
}

/* --- FÄRGPALETT (Mörkt läge) --- */
[data-theme="dark"] {
    --color-text: #e2e8f0;            
    --color-bg: #1a202c;              
    --color-primary: #63b3ed;        
    --color-primary-hover: #90cdf4;
    --color-secondary: #2d3748;
    --color-secondary-hover: #4a5568;
    --color-border: #3b4c63; 
    --color-card-bg: #2d3748;
    
    /* KORT-GRADIENT (Mörkt) */
    --color-card-grad-start: #2c3e50; 
    --color-card-grad-end: #1a202c;
    
    /* BADGE-FÄRGER (Mörkt) */
    --color-badge-bg: #2d3748;
    --color-badge-border: #4a5568;
    --color-badge-text: #e2e8f0;

    --color-focus-ring: #63b3ed;

    --color-bg-transparent: rgba(26, 32, 44, 0.85);
    --color-shadow: rgba(0, 0, 0, 0.4);
    --color-shadow-hover: rgba(0, 0, 0, 0.6);
    
    --text-shadow: none;
    
    --map-opacity: 0.25;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        meta[name="theme-color"][media="(prefers-color-scheme: dark)"] { display: block; }
        meta[name="theme-color"][media="(prefers-color-scheme: light)"] { display: none; }
    }
}


/* ========================================
   2. GRUNDLÄGGANDE STYLING & BAKGRUND
   ======================================== */

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

html {
    font-size: 100%; 
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    background-color: var(--color-bg);
    
    /* Bakgrundsgradient för hela sidan */
    background-image: linear-gradient(
        to bottom,
        color-mix(in srgb, var(--color-primary) 8%, var(--color-bg)) 0%, 
        var(--color-bg) 60%, 
        color-mix(in srgb, var(--color-bg) 92%, var(--color-text)) 100% 
    );
    
    min-height: 100vh;
    background-attachment: fixed; 
    background-repeat: no-repeat;
    overflow-x: hidden; 
    width: 100%;
}

body {
    background-color: transparent; 
    color: var(--color-text);
    font-family: var(--font-family-base);
    line-height: 1.7; 
    font-weight: 400; 
    transition: background-color var(--transition-fast), color var(--transition-fast);
    position: relative; 
    overflow-x: hidden;
    width: 100%;
    
    /* Threat Map Grid (Rutnät) */
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 49px, rgba(43, 108, 176, 0.1) 50px),
        repeating-linear-gradient(90deg, transparent, transparent 49px, rgba(43, 108, 176, 0.1) 50px);
    background-size: 50px 50px;
    background-blend-mode: overlay; 
}

[data-theme="dark"] body {
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 49px, rgba(99, 179, 237, 0.1) 50px),
        repeating-linear-gradient(90deg, transparent, transparent 49px, rgba(99, 179, 237, 0.1) 50px);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: 1.3; 
    margin-top: var(--spacing-lg); 
    margin-bottom: var(--spacing-sm); 
    text-shadow: var(--text-shadow);
}

h1:first-child, h2:first-child, h3:first-child,
section h1:first-child, section h2:first-child, section h3:first-child {
    margin-top: 0;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p { margin-bottom: var(--spacing-md); max-width: 75ch; }

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

ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }


/* ========================================
   3. TILLGÄNGLIGHET
   ======================================== */

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

.skip-link {
    position: absolute; top: -100px; left: 0.5rem;
    background: var(--color-primary); color: var(--color-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 9999; transition: top var(--transition-fast);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    font-weight: 600;
}
.skip-link:focus { top: 0; outline: none; }

:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}
:focus:not(:focus-visible) { outline: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .typing-effect::after { animation: none !important; }
    .project-card { opacity: 1 !important; transform: translateY(0) !important; transition-delay: 0ms !important; }
    .site-header, .site-nav { backdrop-filter: none !important; background-color: var(--color-bg) !important; }
    .hero-image-wrapper::before, .hero-image-wrapper::after { animation: none !important; display: none !important; }
}


/* ========================================
   4. HJÄLPKLASSER & KNAPPAR
   ======================================== */

.container {
    width: 90%; max-width: 1200px;
    margin-left: auto; margin-right: auto;
}

.button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none; 
    border-radius: var(--border-radius);
    font-weight: 600; text-decoration: none; cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
    position: relative;
    box-shadow: var(--shadow-sm); 
}

.button:hover { 
    text-decoration: none; 
    transform: translateY(-2px); 
    box-shadow: var(--shadow-md); 
    filter: brightness(110%);
}
.button:active { transform: translateY(0); box-shadow: var(--shadow-sm); }

.button-primary { 
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover)); 
    color: #ffffff; 
}

.button-secondary { 
    background-color: var(--color-bg); 
    color: var(--color-text); 
    border: 1px solid var(--color-border); 
}
.button-secondary:hover { 
    background-color: var(--color-secondary); 
}


/* ========================================
   5. SIDHUVUD (HEADER) & NAVIGATION
   ======================================== */

.site-header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    position: sticky; top: 0; z-index: 1000;
    background-color: var(--color-bg-transparent);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    transition: background-color var(--transition-fast);
}

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

.logo { display: flex; align-items: center; gap: var(--spacing-md); }

/* Header Social Icons */
.header-socials { display: flex; gap: 0.75rem; align-items: center; }
.header-social-link {
    display: flex; align-items: center;
    color: var(--color-text);
    transition: color var(--transition-fast), transform var(--transition-fast);
}
.header-social-link:hover { color: var(--color-primary); transform: translateY(-2px); }
.social-icon-svg { width: 1.25rem; height: 1.25rem; }

/* Mobilmeny-knapp */
.nav-toggle {
    display: block; 
    background: transparent; border: none;
    padding: 0.75rem; 
    cursor: pointer; 
    z-index: 9999;
    position: absolute;
    left: 50%; top: 50%; transform: translate(-50%, -50%);
}

.hamburger-line {
    display: block; width: 25px; height: 3px;
    background-color: var(--color-text); margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Navigationsmeny */
.site-nav {
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    padding-top: var(--spacing-xl);
    background-color: var(--color-bg-transparent);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px); 
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.site-nav[data-visible="true"] { 
    opacity: 1;
    visibility: visible;
    transform: translateY(0); 
}

.nav-list { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-lg); }

.nav-link {
    font-size: 1.25rem; font-weight: 600; color: var(--color-text);
    text-decoration: none; transition: color var(--transition-fast);
    position: relative; padding-bottom: var(--spacing-xs);
}
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 100%; height: 2px; background-color: var(--color-primary);
    transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease-out;
}
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link:hover, .nav-link.is-active { color: var(--color-primary); }

.header-toggles { display: flex; align-items: center; gap: var(--spacing-sm); }
.theme-toggle, .lang-toggle {
    background: transparent; border: none; cursor: pointer;
    padding: var(--spacing-sm); font-size: 1rem; font-weight: 600;
    border-radius: var(--border-radius); color: var(--color-text);
}
.theme-toggle { font-size: 1.25rem; line-height: 1; }
.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-dark { display: block; }
[data-theme="dark"] .theme-icon-light { display: none; }

.flag-icon {
    width: 2rem; height: auto;
    border-radius: 4px; box-shadow: 0 2px 4px var(--color-shadow);
    transition: transform var(--transition-fast);
    display: none; 
}
.lang-toggle:hover .flag-icon { transform: scale(1.1); }
html[lang="sv"] .flag-en { display: block; }
html[lang="en"] .flag-sv { display: block; }


@media (min-width: 768px) {
    .nav-toggle { display: none; }
    .site-nav {
        position: static; width: auto; height: auto; transform: none;
        padding-top: 0; transition: none;
        background-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none;
        opacity: 1; visibility: visible;
    }
    .nav-list { flex-direction: row; gap: var(--spacing-lg); data-visible: "true"; }
    .nav-link { font-size: 1rem; }
}

/* ========================================
   6. SEKTIONER & INNEHÅLL
   ======================================== */

section { padding: var(--spacing-xl) 0; }
section:nth-of-type(odd), [data-theme="dark"] section:nth-of-type(odd), [data-theme="dark"] section:nth-of-type(even) { background-color: transparent; }

/* Hero */
.hero { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-xl); text-align: center; }
.hero-container { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-lg); }
.hero-tagline { font-size: 1.25rem; margin-bottom: var(--spacing-lg); color: var(--color-text); opacity: 0.9; }

/* Skrivmaskins-höjd fix */
.hero-text h1[data-lang-key="hero_h1"] { min-height: 2.6em; position: relative; }
.hero-text p.hero-tagline[data-lang-key="hero_tagline"] { min-height: 6em; }

@media (min-width: 768px) {
    .hero-text h1[data-lang-key="hero_h1"] { min-height: 1.3em; } 
    .hero-text p.hero-tagline[data-lang-key="hero_tagline"] { min-height: 1.7em; } 
}

.typing-effect::after {
    content: '|'; display: inline-block; margin-left: 0.15em; color: var(--color-text);
    animation: blink 0.7s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* Projekt */
.cert-list { list-style: disc; padding-left: var(--spacing-lg); }
.cert-list li { margin-bottom: var(--spacing-sm); }

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

/* --- PROJEKTKORT --- */
.project-card {
    background-image: linear-gradient(to bottom right, var(--color-card-grad-start), var(--color-card-grad-end));
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius); 
    box-shadow: var(--shadow-md); 
    overflow: hidden;
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, box-shadow var(--transition-fast);
}
.project-card.is-visible { opacity: 1; transform: translateY(0); }
.project-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); }

.card-content { padding: var(--spacing-lg); }
.project-role { font-size: 0.875rem; font-weight: 600; color: var(--color-primary); margin-bottom: var(--spacing-sm); text-transform: uppercase; }
.project-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-top: var(--spacing-md); }

/* TAGS */
.tag {
    background-color: var(--color-badge-bg); 
    color: var(--color-badge-text);
    border: 1px solid var(--color-badge-border);
    padding: var(--spacing-xs) var(--spacing-sm); 
    border-radius: 99px; 
    font-size: 0.75rem; font-weight: 600;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05); 
}

.project-links { margin-top: var(--spacing-lg); }
.project-link { font-weight: 600; text-decoration: none; }
.project-link:hover { text-decoration: underline; }
.project-link span { transition: transform var(--transition-fast); display: inline-block; }
.project-link:hover span { transform: translateX(4px); }

/* Färdigheter (Skills) - Hover Expand Effekt */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
    gap: var(--spacing-md);
}

.skill-card {
    background-image: linear-gradient(to bottom right, var(--color-card-grad-start), var(--color-card-grad-end));
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    cursor: default; 
    
    min-height: 80px;
}

.skill-card h3 {
    font-size: 1.125rem;
    margin: 0; 
    color: var(--color-primary);
    transition: transform 0.3s ease;
}

.skill-card p {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
    opacity: 0.9;
    
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transition: all 0.4s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
    background-color: var(--color-card-bg); 
}

.skill-card:hover h3 {
    transform: translateY(-5px); 
}

.skill-card:hover p {
    max-height: 200px; 
    opacity: 1;
    margin-top: var(--spacing-sm); 
}

/* CV */
.cv .button { margin-right: var(--spacing-md); margin-bottom: var(--spacing-md); }

/* Reflektion */
.reflection blockquote {
    border-left: 5px solid var(--color-primary); padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0; font-style: italic; font-size: 1.125rem;
}
.reflection cite { display: block; margin-top: var(--spacing-md); font-style: normal; font-weight: 600; }

/* Footer */
.site-footer { padding: var(--spacing-lg) 0; background-color: var(--color-card-bg); border-top: 1px solid var(--color-border); font-size: 0.875rem; }
.footer-container { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-md); text-align: center; }
.social-links { display: flex; gap: var(--spacing-lg); }
.social-links a { font-weight: 600; text-decoration: none; }
.social-links a:hover { text-decoration: underline; }

@media (min-width: 768px) {
    h1 { font-size: 3rem; }
    .hero { text-align: left; }
    .hero-container { flex-direction: row; justify-content: space-between; }
    .hero-text { flex: 2; }
    .hero-image-wrapper { width: 280px; height: 280px; }
    .project-grid { grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); }
    .footer-container { flex-direction: row; justify-content: space-between; text-align: left; }
}
@media (min-width: 1200px) {
    h1 { font-size: 3.5rem; }
    .hero-tagline { font-size: 1.5rem; }
    .hero-image-wrapper { width: 400px; height: 400px; }
}


/* ========================================
   7. THREAT MAP (BAKGRUND)
   ======================================== */

.threatmap-container {
    position: fixed; 
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: 0; 
    pointer-events: none; 
    overflow: hidden;
}

.threatmap-background {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('threatmap_background.png'); 
    background-size: cover; background-position: center;
    opacity: var(--map-opacity);
}

.site-header, #main-content, .site-footer {
    position: relative;
    z-index: 5;
}


/* ========================================
   8. MOVIE RADAR ANIMATION (FÖR PROFILBILD)
   ======================================== */

.hero-image-wrapper {
    position: relative; 
    z-index: 10; 
    display: flex; justify-content: center; align-items: center;
    width: 280px; height: 280px; margin: 0 auto;
}
.hero-image {
    width: 80%; height: 80%; border-radius: 50%; object-fit: cover;
    position: relative; z-index: 5; border: 2px solid var(--color-primary);
    box-shadow: 0 0 15px var(--color-primary);
}
.hero-image-wrapper::before {
    content: ''; position: absolute; inset: 0; border-radius: 50%;
    border: 2px solid var(--color-primary);
    background-image:
        linear-gradient(90deg, transparent 49.5%, var(--color-primary) 50%, transparent 50.5%),
        linear-gradient(0deg, transparent 49.5%, var(--color-primary) 50%, transparent 50.5%),
        radial-gradient(transparent 30%, var(--color-primary) 31%, transparent 32%),
        radial-gradient(transparent 60%, var(--color-primary) 61%, transparent 62%);
    opacity: 0.3; z-index: 1;
}
.hero-image-wrapper::after {
    content: ''; position: absolute; inset: 0; border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0deg, transparent 260deg, var(--color-primary) 360deg);
    opacity: 0.4; z-index: 2; animation: radar-sweep 3s linear infinite;
}
@keyframes radar-sweep {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}