/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo span {
    color: var(--secondary-color);
}

.small-text {
    font-size: 0.7em;
    vertical-align: baseline;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.lang-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    min-width: 50px;
    opacity: 0.7;
}

.lang-btn:hover {
    opacity: 1;
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
    opacity: 1;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.flag-icon {
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.flag-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.5px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 8rem 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.highlight {
    color: #fbbf24;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.project-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.project-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--primary-dark);
}

.add-project {
    border: 2px dashed var(--text-light);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0.7;
}

.add-project:hover {
    opacity: 1;
    border-color: var(--primary-color);
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--white);
}

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

.about-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--bg-light);
    text-align: center;
}

.contact-text {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Contact Form Styles */
.contact-form-wrapper {
    max-width: 600px;
    margin: 3rem auto 0;
    background: var(--white);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.08);
    border: 1px solid #6b7280 !important;
}

.contact-form {
    text-align: left;
}

.form-group {
    margin-bottom: 10px;
}

.form-input {
    width: 100%;
    padding: 5px;
    border: 1px solid #6b7280 !important;
    border-radius: 0.5rem;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
    background: #ffffff;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.form-input::placeholder {
    color: #9ca3af;
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
    border: 1px solid #6b7280 !important;
}

.form-submit {
    width: 100%;
    padding: 1rem;
    margin-top: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: none;
    transition: all 0.3s ease;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3), 0 4px 6px -2px rgba(99, 102, 241, 0.2);
}

.form-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

.form-result {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Form Validation Styles */
.invalid-feedback,
.empty-feedback {
    display: none;
}

.was-validated :placeholder-shown:invalid ~ .empty-feedback {
    display: block;
}

.was-validated :not(:placeholder-shown):invalid ~ .invalid-feedback {
    display: block;
}

.is-invalid,
.was-validated :invalid {
    border-color: #ef4444;
    box-shadow: 0 1px 3px 0 rgba(239, 68, 68, 0.2), 0 1px 2px 0 rgba(239, 68, 68, 0.1);
}

.is-invalid:focus,
.was-validated :invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2), 0 4px 6px -1px rgba(239, 68, 68, 0.15);
}

.was-validated :valid {
    border-color: #10b981;
    box-shadow: 0 1px 3px 0 rgba(16, 185, 129, 0.2), 0 1px 2px 0 rgba(16, 185, 129, 0.1);
}

.was-validated :valid:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2), 0 4px 6px -1px rgba(16, 185, 129, 0.15);
}


/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    opacity: 0.8;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        gap: 1rem;
    }

    .hero {
        padding: 4rem 0;
    }

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

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

    .section-title {
        font-size: 2rem;
    }

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

    .contact-form-wrapper {
        padding: 2rem;
        margin: 2rem 1rem 0;
    }

    .form-group {
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .language-switcher {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        justify-content: center;
        gap: 1rem;
    }

    .lang-btn {
        min-width: 60px;
        padding: 0.75rem 0.5rem;
    }

    .contact-form-wrapper {
        padding: 1.5rem;
        margin: 1.5rem 0.5rem 0;
    }

    .form-group {
        margin-bottom: 10px;
    }

    .form-input {
        font-size: 0.875rem;
        padding: 5px;
    }
}