/* ========================================
   CSS VARIABLES & RESET
   ======================================== */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-background: #ffffff;
    --color-background-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --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);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background-alt);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

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

h1 {
    font-size: 2rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.875rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

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

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

strong {
    font-weight: 600;
    color: var(--color-text);
}

.lead {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   LAYOUT CONTAINER
   ======================================== */

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ========================================
   HEADER
   ======================================== */

header {
    position: sticky;
    top: 0;
    z-index: 100;

    /* bară mai subțire */
    padding: 0.5rem 0 0rem;

    /* aero / glass effect */
    background-color: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.7);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.brand-logo {
    height: 50px;
    width: auto;
    display: block;
}

/* puțin mai mic pe mobile foarte mici */
@media (max-width: 480px) {
    .brand-logo {
        height: 26px;
    }
}

.brand h1 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.subtitle {
    font-family: "Georgia", "Times New Roman", serif;
    font-style: italic;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    color: #9ca3af;
    margin-top: 0.2rem;
}

nav {
    display: flex;
    gap: var(--spacing-lg);
}

nav a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

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

nav a.active {
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.1);
}

@media (max-width: 640px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    nav {
        gap: var(--spacing-md);
    }
}

/* ========================================
   MAIN CONTENT
   ======================================== */

main {
    min-height: calc(100vh - 300px);
    padding: var(--spacing-2xl) 0;
}

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

.hero {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

@media (max-width: 640px) {
    .hero h2 {
        font-size: 2rem;
    }
}

/* ========================================
   ANALYSIS CARDS GRID
   ======================================== */

.analyses-grid {
    display: grid;
    gap: var(--spacing-lg);
}

/* link care cuprinde cardul – face cardul clicabil */
.analysis-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* cardul în sine */
.analysis-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* bara colorată de sus */
.analysis-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

/* hover pe link, nu direct pe card */
.analysis-card-link:hover .analysis-card {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.analysis-card-link:hover .analysis-card::before {
    transform: scaleX(1);
}

.card-header {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.analysis-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.analysis-card h3 a {
    color: var(--color-text);
    transition: var(--transition);
}

.analysis-card h3 a:hover {
    color: var(--color-primary);
}

.analysis-card .date {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.analysis-card .description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.read-more {
    display: inline-flex;
    align-items: center;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.read-more:hover {
    transform: translateX(4px);
}

/* ========================================
   CONTENT PAGE
   ======================================== */

.content-page {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.page-header {
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.page-header h2 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-sm);
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

.content-section:last-child {
    margin-bottom: 0;
}

.content-section h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.styled-list {
    list-style: none;
    padding-left: 0;
}

.styled-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.styled-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

/* ========================================
   SKILLS GRID
   ======================================== */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.skill-item {
    background-color: var(--color-background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.skill-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.skill-item h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.skill-item p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.6;
}

/* ========================================
   CONTACT GRID
   ======================================== */

   .brand-link {
    display: inline-block;
}

.brand-link:hover {
    opacity: 0.9;          /* mic feedback la hover */
}

.brand-link img {
    display: block;        /* elimină spațiul sub imagine */
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.contact-item {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.contact-item h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.contact-item a {
    font-size: 0.9375rem;
    word-break: break-word;
}

/* ========================================
   ANALYSIS PAGE
   ======================================== */

.analysis-page {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.analysis-header {
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

.analysis-header h2 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.analysis-header .date {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.analysis-section {
    margin-bottom: var(--spacing-2xl);
}

.analysis-section:last-child {
    margin-bottom: 0;
}

.analysis-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.info-box {
    background-color: var(--color-background-alt);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-md) 0;
}

.info-box p {
    margin-bottom: var(--spacing-xs);
}

.info-box p:last-child {
    margin-bottom: 0;
}

.insights-list {
    list-style: none;
    padding-left: 0;
}

.insights-list li {
    position: relative;
    padding: var(--spacing-md);
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid var(--color-primary);
    line-height: 1.7;
}

.insights-list li::before {
    content: '✓';
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-md);
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.125rem;
}

.next-steps {
    background-color: rgba(37, 99, 235, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid var(--color-primary);
    margin-top: var(--spacing-md);
}

/* ========================================
   POWER BI EMBED
   ======================================== */

.powerbi-embed {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    background-color: var(--color-background-alt);
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-top: var(--spacing-lg);
}

.powerbi-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.embed-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 80%;
}

.embed-placeholder p:first-child {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.embed-note {
    color: var(--color-text-light);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ========================================
   ANALYSIS FOOTER
   ======================================== */

.analysis-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.back-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-light);
    font-weight: 500;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--color-primary);
    transform: translateX(-4px);
}

/* ========================================
   FOOTER
   ======================================== */

footer {
    background-color: var(--color-background);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
    text-align: center;
}

footer p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin: 0;
}

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

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero h2 {
        font-size: 1.75rem;
    }
    
    .analysis-header h2 {
        font-size: 1.75rem;
    }
    
    .page-header h2 {
        font-size: 1.75rem;
    }
    
    .content-page,
    .analysis-page {
        padding: var(--spacing-lg);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

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

    header {
        padding: var(--spacing-md) 0;
    }
    
    .brand h1 {
        font-size: 1.125rem;
    }
    
    .subtitle {
        font-size: 0.8125rem;
    }
    
    nav {
        gap: var(--spacing-sm);
    }
    
    nav a {
        font-size: 0.875rem;
        padding: 0.375rem 0.75rem;
    }
    
    main {
        padding: var(--spacing-lg) 0;
    }
    
    .content-page,
    .analysis-page {
        padding: var(--spacing-md);
    }
    
    .analysis-card {
        padding: var(--spacing-md);
    }
    
    .contact-item {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .contact-icon {
        font-size: 2.5rem;
    }
}

/* ========================================
   MOBILE LANDSCAPE TWEAKS
   ======================================== */

@media (max-width: 900px) and (orientation: landscape) {
    header {
        padding: 0.5rem 0;
    }

    .header-content {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-md);
    }

    .brand h1 {
        font-size: 1.125rem;
    }

    .subtitle {
        display: none; /* ascundem motto-ul ca să câștigăm înălțime */
    }

    nav a {
        font-size: 0.875rem;
        padding: 0.25rem 0.75rem;
    }

    main {
        padding: var(--spacing-md) 0;
    }

    .powerbi-embed {
        padding-bottom: 0;
        height: 70vh; /* dashboard mai înalt în landscape */
        border-width: 1px;
    }

    .powerbi-embed iframe {
        height: 100%;
    }
}

/* ========================================
   UTILITIES
   ======================================== */

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.analysis-card,
.content-page,
.analysis-page {
    animation: fadeIn 0.5s ease-out;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    header,
    footer,
    nav,
    .back-link,
    .read-more {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .content-page,
    .analysis-page {
        border: none;
        box-shadow: none;
        padding: 0;
    }
    
    a {
        color: var(--color-text);
        text-decoration: underline;
    }
}