/* ============================================
TECH CRAFTER - MAIN STYLESHEET
============================================ */

/* ============================================
CSS CUSTOM PROPERTIES (VARIABLES)
============================================ */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-golden: #fed265;
    --color-light-gray: #f7f7f7;
    --color-lighter-gray: #f1f1f1;
    --color-text: #333333;

    /* Typography */
    --font-serif: 'Lora', serif;
    --font-sans: 'Montserrat', sans-serif;
    --font-weight-normal: 400;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Border Radius */
    --radius-md: 10px;
    --radius-lg: 16px;

    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-normal: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-white);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    font-weight: var(--font-weight-normal);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

h5 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

h6 {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

a:hover {
    color: var(--color-golden);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header {
    background-color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-lighter-gray);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo img {
    height: 32px;
    width: auto;
}

nav a {
    margin-left: var(--spacing-lg);
    font-weight: var(--font-weight-bold);
}

nav a:hover {
    color: var(--color-golden);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background-color: var(--color-white);
    padding: var(--spacing-xxl) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 600px;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
}

.btn-secondary {
    background-color: var(--color-lighter-gray);
    color: var(--color-black);
}

.btn-secondary:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
}

/* ============================================
   MAIN CONTAINER & SECTIONS
   ============================================ */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--color-lighter-gray);
}

section:last-of-type {
    border-bottom: none;
}

section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background-color: var(--color-light-gray);
}

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

.about p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--color-text);
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.experience {
    background-color: var(--color-white);
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    padding: var(--spacing-lg);
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-golden);
}

.experience-item h4 {
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.experience-item .meta {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-bold);
}

.experience-item p {
    margin-bottom: 0;
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
    background-color: var(--color-lighter-gray);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.skill-category {
    margin-bottom: 0;
    padding: var(--spacing-md);
    background-color: var(--color-lighter-gray);
    border-radius: var(--radius-md);
}

.skill-category h4 {
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.skill-category h4 i {
    color: var(--color-golden);
    font-size: 1.1rem;
}

.skill-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--color-lighter-gray);
    border: 1px solid var(--color-golden);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.skill-item:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
    font-weight: var(--font-weight-bold);
    box-shadow: 0 2px 8px rgba(254, 210, 101, 0.3);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects {
    background-color: var(--color-white);
}

.projects-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.project-card {
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--color-lighter-gray);
}

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

.project-card h3 {
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.project-card p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

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

.tag {
    display: inline-block;
    background-color: var(--color-white);
    color: var(--color-black);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--color-lighter-gray);
}

.project-link {
    display: inline-block;
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    transition: all var(--transition-fast);
}

.project-link:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
}

/* ============================================
   CERTIFICATES SECTION
   ============================================ */
.certificates {
    background-color: var(--color-lighter-gray);
}

.certificates-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.certificate-item {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.certificate-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.certificate-info h4 {
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.certificate-issuer {
    font-size: 0.9rem;
    color: #666;
}

.certificate-link {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    transition: all var(--transition-fast);
    white-space: nowrap;
    margin-left: var(--spacing-md);
}

.certificate-link:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background-color: var(--color-white);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

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

.contact-intro p {
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-bold);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-golden);
    box-shadow: 0 0 0 3px rgba(254, 210, 101, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group.required label:after {
    content: " *";
    color: #e74c3c;
}

.form-submit {
    width: 100%;
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.form-submit:hover {
    background-color: var(--color-golden);
    color: var(--color-black);
}

.form-submit:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* ============================================
   SUCCESS/ERROR MESSAGES
   ============================================ */
.message-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.message-overlay.show {
    display: flex;
}

.message-box {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    max-width: 500px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.message-box.success {
    border-top: 4px solid #27ae60;
}

.message-box.error {
    border-top: 4px solid #e74c3c;
}

.message-box h3 {
    margin-bottom: var(--spacing-md);
}

.message-box.success h3 {
    color: #27ae60;
}

.message-box.error h3 {
    color: #e74c3c;
}

.message-box p {
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.message-close {
    background-color: var(--color-golden);
    color: var(--color-black);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.message-close:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background-color: var(--color-light-gray);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    border-top: 1px solid var(--color-lighter-gray);
}

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

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-white);
    color: var(--color-black);
    font-weight: var(--font-weight-bold);
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.footer-social a:hover {
    background-color: var(--color-golden);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.footer-social a i {
    font-size: 24px;
}

.footer-credit {
    font-size: 0.9rem;
    color: #666;
}

/* ============================================
   LOADING STATE
   ============================================ */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-lighter-gray);
    border-top-color: var(--color-golden);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

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

/* Tablet (768px and up) */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero {
        min-height: 500px;
        padding: var(--spacing-xl) var(--spacing-md);
    }

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

    .hero p {
        font-size: 1.1rem;
    }

    .header-container {
        padding: var(--spacing-md);
    }

    nav a {
        margin-left: var(--spacing-md);
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .certificate-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .certificate-link {
        margin-left: 0;
        margin-top: var(--spacing-md);
        width: 100%;
    }

    section {
        padding: var(--spacing-xl) 0;
    }
}

/* Mobile (480px and down) */
@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .hero {
        min-height: 400px;
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

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

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

    .header-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    header {
        padding: var(--spacing-md);
    }

    nav a {
        margin-left: var(--spacing-sm);
        font-size: 0.9rem;
    }

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

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

    .experience-list {
        gap: var(--spacing-md);
    }

    .experience-item {
        padding: var(--spacing-md);
    }

    .contact-content {
        padding: 0 var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) 0;
    }

    .message-box {
        margin: var(--spacing-md);
    }
}

/* Extra small screens (320px and down) */
@media (max-width: 320px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }

    nav a {
        display: block;
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
}