/* ===================================
   PROJECTS PAGE - DISTINCTIVE DESIGN
   Font: Syne (Display) + Space Mono (Tech)
   Theme: Modern Brutalism with Soft Edges
   =================================== */

:root {

    --primary: #0F8099;          /* Βάση */
    --accent: #0DA5C0;           /* Πιο έντονο πετρόλ */
    --accent-hover: #0BC3E3;     /* Ακόμα πιο φωτεινό */
    --secondary: #6FA9B8;        /* Μεσαίος τόνος */
    --bg-light: #F0F5F7;         /* Πολύ ανοιχτό με υπότονο πετρόλ */
    --bg-dark: #1A3D47;          /* Σκούρο πετρόλ */
    --text-dark: #1A3D47;
    --text-light: #FFFFFF;
    --text-muted: #8BA6B0;       /* Γκρι-πετρόλ */
    --border: #CFE2E8;
    --shadow: rgba(15, 128, 153, 0.10);
    --shadow-hover: rgba(15, 128, 153, 0.18);

    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3.5rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 3rem;

    /* Animation */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================
   GLOBAL RESET
   ================== */

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

body {
    font-family: var(--font-display);
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}


/* ==================
   HERO SECTION
   ================== */

.hero {
    margin-top: 0px;
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary);
    background: rgba(78, 205, 196, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease-out backwards;
}

.title-line:nth-child(1) {
    animation-delay: 0.1s;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
    color: var(--accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    opacity: 0.9;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.hero-decoration {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0.1;
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

/* ==================
   PROJECTS SECTION
   ================== */

.projects-section {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: var(--bg-light);
}

.projects-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* ==================
   PROJECT CARD
   ================== */

.project-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow);
    transition: all var(--transition-base);
    animation: fadeInUp 0.6s ease-out backwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-hover);
}

.project-image {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(10, 14, 39, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
}

.project-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    background: var(--accent);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
}

.project-content {
    padding: var(--spacing-lg);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-date {
    color: var(--text-muted);
}

.project-status {
    color: var(--secondary);
    background: rgba(78, 205, 196, 0.1);
    padding: 4px 12px;
    border-radius: 50px;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.project-description {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--bg-light);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #0F8099 0%, #adb1b1 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    border: 2px solid white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(15, 128, 153, 0.4);
}

.project-link svg {
    transition: transform 0.3s ease;
}

.project-link:hover svg {
    transform: translateX(4px);
}

/* ==================
   CTA SECTION
   ================== */

.cta-section {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
    color: var(--text-light);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-text {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    background: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    transition: all var(--transition-base);
}

.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.cta-button svg {
    transition: transform var(--transition-base);
}

.cta-button:hover svg {
    transform: translateX(4px);
}


/* ==================
   ANIMATIONS
   ================== */

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.15;
    }
}

/* ==================
   RESPONSIVE
   ================== */

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

    .mobile-menu.active {
        display: flex;
    }

    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .project-image {
        height: 220px;
    }

    .project-content {
        padding: var(--spacing-md);
    }
}