/* ================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ================================ */
:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-header: #1a1a2e;
    --text-primary: #fbbf24;
    --text-secondary: #d1d5db;
    --accent-color: #f59e0b;
    --accent-hover: #ef4444;
    --border-color: rgba(245, 158, 11, 0.2);
    --shadow: 0 5px 20px rgba(245, 158, 11, 0.1);
}

/* ================================
   GLOBAL RESET & BASE STYLES
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Montserrat", sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ================================
   NAVIGATION
   ================================ */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-header);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 4rem;
}

.hero-content {
    padding-top: 100px;
}

.hero h1 {
    font-size: 2.2rem;  /* 2.8rem -> 2.2rem (merkittävä pienennys) */
    font-weight: 700;
    margin-bottom: 0.8rem;  /* 1rem -> 0.8rem */
    background: linear-gradient(135deg, var(--accent-color), #ff8888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h2 {
    font-size: 1rem;  /* 1.2rem -> 1rem */
    color: var(--text-secondary);
    margin-bottom: 1.2rem;  /* 1.5rem -> 1.2rem */
    font-weight: 400;
}

.hero p {
    font-size: 0.9rem;  /* 1rem -> 0.9rem */
    line-height: 1.6;  /* 1.7 -> 1.6 */
    margin-bottom: 1.2rem;  /* 1.5rem -> 1.2rem */
    color: var(--text-secondary);
}

.hero-image {
    text-align: center;
    padding-top: 100px;
}

.hero-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.05);
}

/* ================================
   BUTTONS
   ================================ */
.btn {
    display: inline-block;
    padding: 10px 20px;  /* 12px 24px -> 10px 20px */
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    font-size: 0.9rem;  /* Lisätty pienempää fonttikokoa */
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 68, 68, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    padding: 8px 18px;  /* Hieman pienempi koska border vie tilaa */
}

.btn-secondary:hover {
    background: var(--accent-color);
    color: white;
}

/* ================================
   SKILLS SECTION
   ================================ */
.skills {
    padding: 5rem 2rem;
    background: var(--bg-secondary);
}

.skills-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.skill-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.skill-card i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.skill-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.video-container {
    text-align: center;
    margin-top: 3rem;
}

.video-container iframe {
    border-radius: 15px;
    box-shadow: var(--shadow);
}

/* ================================
   PROJECTS SECTION
   ================================ */
.projects {
    padding: 5rem 2rem;
    background: var(--bg-primary);
}

.projects-container {
    max-width: 1200px;
    margin: 0 auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

/* ================================
   CONTACT SECTION
   ================================ */
.contact {
    padding: 5rem 2rem;
    background: var(--bg-secondary);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.contact-item i {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-right: 1rem;
    width: 20px;
}

/* Click-to-reveal yhteystiedot */
.contact-reveal {
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-hidden {
    color: var(--accent-color);
    text-decoration: underline;
    font-style: italic;
}

.contact-hidden:hover {
    color: var(--accent-hover);
}

.contact-shown {
    color: var(--text-primary);
    font-weight: 500;
}

.contact-form {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ================================
   FOOTER
   ================================ */
footer {
    background: var(--bg-header);
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.social-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
}

/* ================================
   MOBILE MENU
   ================================ */
.mobile-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.mobile-menu span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */
@media screen and (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-header);
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: var(--shadow);
        z-index: 999;
    }
    
    .nav-links.mobile-active {
        display: flex !important;
    }

    .nav-links li {
        text-align: center;
        padding: 0.5rem 0;
    }

    .mobile-menu {
        display: flex;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .video-container iframe {
        width: 100%;
        height: 200px;
    }
}
/* ================================
   ANIMATIONS
   ================================ */

/* 3D-tausta ja shadow-efektit hero-kuvalle - HIENOVARAISEMMAT */
.hero-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(5deg);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, 
        rgba(245, 158, 11, 0.15), 
        rgba(239, 68, 68, 0.1), 
        transparent 70%);
    border-radius: 50%;
    filter: blur(25px);
    z-index: -1;
    animation: float 8s ease-in-out infinite;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-5deg);
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, 
        rgba(239, 68, 68, 0.1), 
        rgba(245, 158, 11, 0.08), 
        transparent 60%);
    border-radius: 50%;
    filter: blur(20px);
    z-index: -1;
    animation: float 10s ease-in-out infinite reverse;
}

/* Floating animaatio taustaelementeille - hienovaraisempi */
@keyframes float {
    0%, 100% {
        transform: translate(-50%, -50%) rotate(5deg) translateY(0px);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, -50%) rotate(5deg) translateY(-10px);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomInFade {
    0% {
        opacity: 0;
        transform: scale(0.3) rotate(-10deg);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1) rotate(0deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes slideInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.logo:hover {
    color: var(--accent-hover);
    transform: scale(1.05);
}

.logo i {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-content {
    animation: slideInFromLeft 1.2s ease;
}

.hero-image img {
    /* Alkutila - piilotettu ja pienennetty */
    opacity: 0;
    transform: scale(0.3) rotate(-10deg);
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Animaatioluokka joka lisätään JavaScriptillä */
.hero-image img.animate-in {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.skill-card {
    animation: easeInUp 0.5s ease forwards;
    animation-delay: 0.2s;
    animation-fill-mode: both;
}

/* ================================
   SCROLL INDICATOR
   ================================ */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--accent-color);
    z-index: 1001;
    transition: width 0.3s ease;
}

/* ================================
   LANGUAGE SWITCHER
   ================================ */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 0.8rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    font-family: inherit;
}

.lang-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
}

.lang-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--bg-primary);
}

/* Mobiilissa kielivalitsin */
@media screen and (max-width: 768px) {
    .language-switcher {
        gap: 0.3rem;
    }
    
    .lang-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.7rem;
    }
}