/* ============================================================================
   IANA-STYLE PROFESSIONAL WEBSITE STYLESHEET
   Muhammad Muawiyah - Partnership & Brand Strategy Specialist
   ============================================================================ */

:root {
    /* Primary Colors */
    --primary-color: #003366;
    --secondary-color: #0055b8;
    --accent-color: #ff6b35;
    
    /* Neutral Colors */
    --bg-light: #f5f5f5;
    --bg-main: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --border-color: #ddd;
    --border-light: #eeeeee;
    
    /* Typography */
    --font-serif: Georgia, 'Times New Roman', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 8px rgba(0,0,0,0.15);
    
    /* Borders */
    --border-radius: 2px;
    --border-width: 1px;
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-light);
}

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

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

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: var(--spacing-xs);
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
}

h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--text-primary);
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid transparent;
}

a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

ul, ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

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

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

.main-header {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.logo-section h1 {
    color: white;
    margin-bottom: var(--spacing-xs);
    font-size: 1.8rem;
}

.tagline {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    letter-spacing: 1px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    margin: 0;
}

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

.nav-link {
    color: white;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

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

.main-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

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

.section-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 90%;
}

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

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-2xl) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.hero-content h2 {
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    margin-top: 0;
}

.hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.95);
}

.hero-ctas {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
}

.cta-button.primary {
    background-color: var(--accent-color);
    color: white;
}

.cta-button.primary:hover {
    background-color: #ff5722;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.cta-button.secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

.cta-button.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ============================================================================
   CONTENT SECTIONS
   ============================================================================ */

.content-article {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.philosophy-list,
.experience-list {
    list-style-type: none;
    margin-left: 0;
}

.philosophy-list li,
.experience-list li {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    position: relative;
}

.philosophy-list li:before,
.experience-list li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* ============================================================================
   EXPERTISE SECTION
   ============================================================================ */

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.expertise-card {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-top: 4px solid var(--secondary-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.expertise-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.expertise-card h3 {
    margin-top: 0;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.expertise-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

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

.expertise-tags span {
    display: inline-block;
    background-color: var(--bg-light);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    border-radius: 2px;
    border: 1px solid var(--border-color);
}

/* ============================================================================
   EXPERIENCE SECTION
   ============================================================================ */

.experience-timeline {
    position: relative;
}

.experience-entry {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--secondary-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.experience-entry:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--accent-color);
}

.entry-header {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--spacing-md);
}

.entry-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.company-name {
    display: block;
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 1rem;
    margin-top: var(--spacing-xs);
}

.location {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
}

.duration {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
}

.entry-content h4 {
    color: var(--primary-color);
    font-size: 1.05rem;
}

.entry-content p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.entry-content ul {
    margin-left: var(--spacing-lg);
}

.entry-content li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* ============================================================================
   SERVICES SECTION
   ============================================================================ */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-top: 3px solid var(--accent-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-card h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================================================
   CONTACT SECTION
   ============================================================================ */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.contact-card {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--secondary-color);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.contact-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.contact-card p {
    margin: var(--spacing-sm) 0;
}

.contact-card a {
    color: var(--secondary-color);
    font-weight: 600;
    border-bottom: 1px dotted var(--secondary-color);
}

.contact-note {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin: 0;
}

.contact-form-section {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.contact-form {
    margin-top: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
}

label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-group.checkbox label {
    margin-bottom: 0;
    font-weight: normal;
    color: var(--text-primary);
    cursor: pointer;
}

input[type="text"],
input[type="email"],
textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all 0.2s ease;
    background-color: #fafafa;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    background-color: white;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(0, 85, 184, 0.1);
}

textarea {
    resize: vertical;
    font-family: var(--font-sans);
}

.submit-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    background-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.form-note {
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.footer-section {
    background-color: var(--bg-main);
    padding: var(--spacing-lg);
    border-top: 2px solid var(--border-light);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    background-color: var(--bg-main);
}

.footer-content h3 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
}

.footer-content p {
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.main-footer {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
    margin-top: var(--spacing-2xl);
    font-size: 0.9rem;
}

.main-footer p {
    margin: var(--spacing-xs) 0;
    color: rgba(255, 255, 255, 0.9);
}

.main-footer a {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.footer-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--spacing-md);
}

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

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .main-nav {
        width: 100%;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .expertise-grid,
    .services-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    .content-article,
    .experience-entry,
    .contact-form-section {
        padding: var(--spacing-md);
    }

    .hero-ctas {
        flex-direction: column;
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

    .contact-form {
        margin-top: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .main-header {
        padding: var(--spacing-md) 0;
    }

    .logo-section h1 {
        font-size: 1.4rem;
    }

    .tagline {
        font-size: 0.75rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
        padding-bottom: var(--spacing-xs);
    }

    h3 {
        font-size: 1.1rem;
    }

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

    .hero-section {
        padding: var(--spacing-lg);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    p {
        font-size: 0.95rem;
    }

    .section-intro {
        max-width: 100%;
    }

    ul, ol {
        margin-left: var(--spacing-md);
    }
}

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

@media print {
    .main-header,
    .main-footer,
    .hero-section {
        background: none;
        color: black;
    }

    .nav-link {
        display: none;
    }

    section {
        page-break-inside: avoid;
    }

    .experience-entry,
    .expertise-card,
    .service-card {
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}