/* Base layout for sticky footer */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f8f8;
    color: #333;
    display: flex;
    flex-direction: column;
}

body > .topbar,
body > header,
body > footer {
    flex-shrink: 0;
}

body > main {
    flex-grow: 1;
    padding: clamp(15px, 3vw, 20px) 0;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Profile Card Styles */
.profile-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    padding: clamp(20px, 4vw, 40px);
    margin-bottom: clamp(20px, 5vw, 40px);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.card-header {
    text-align: center;
    margin-bottom: clamp(20px, 4vw, 30px);
    padding-bottom: 15px;
    border-bottom: 3px solid #0d1430;
}

.card-header h2 {
    font-size: clamp(28px, 5vw, 36px);
    color: #0d1430;
    margin: 0;
    font-weight: 700;
}

/* Personal Info Section */
.personal-info {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    font-size: clamp(14px, 2.5vw, 16px);
}

.info-row:last-child {
    border-bottom: none;
}

.info-row .label {
    font-weight: 600;
    color: #0d1430;
    min-width: 100px;
}

.info-row .value {
    color: #333;
    text-align: right;
    flex: 1;
    margin-left: 20px;
}

/* About Section */
.about-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.about-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(10px, 3vw, 15px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
}

.about-section p {
    font-size: clamp(14px, 2.5vw, 16px);
    line-height: 1.6;
    margin-bottom: clamp(8px, 2vw, 12px);
    color: #333;
}

/* Hobbies Section */
.hobbies-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.hobbies-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(15px, 3vw, 20px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
}

.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.hobby-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 15px 10px;
    background: #f8f9fa;
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.hobby-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: #0d1430;
}

.hobby-icon {
    font-size: 24px;
    margin-bottom: 8px;
    display: block;
}

.hobby-item span:last-child {
    font-size: clamp(12px, 2vw, 14px);
    font-weight: 500;
    color: #333;
}

/* Education Section */
.education-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.education-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(15px, 3vw, 20px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
}

.education-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #0d1430;
}

.education-item .year {
    display: block;
    font-weight: 600;
    color: #0d1430;
    font-size: clamp(12px, 2vw, 14px);
    margin-bottom: 5px;
}

.education-item .degree {
    display: block;
    font-weight: 600;
    color: #333;
    font-size: clamp(14px, 2.5vw, 16px);
    margin-bottom: 3px;
}

.education-item .institution {
    display: block;
    color: #666;
    font-size: clamp(12px, 2vw, 14px);
}

/* Languages Section */
.languages-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.languages-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(10px, 3vw, 15px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
}

.section-description {
    font-size: clamp(14px, 2.5vw, 16px);
    color: #666;
    margin-bottom: clamp(20px, 4vw, 30px);
    font-style: italic;
    line-height: 1.5;
}

/* Tab Container */
.tab-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    overflow: hidden;
}

/* Tab Buttons */
.tab-buttons {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.tab-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 15px;
    background: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    gap: 8px;
}

.tab-btn:hover {
    background: #e9ecef;
}

.tab-btn.active {
    background: white;
    color: #0d1430;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #0d1430;
}

.tab-icon {
    font-size: 24px;
    display: block;
}

.tab-text {
    font-size: 14px;
    font-weight: 600;
    color: #666;
    transition: color 0.3s ease;
}

.tab-btn.active .tab-text {
    color: #0d1430;
}

/* Tab Content */
.tab-content {
    padding: 30px;
}

.tab-panel {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

.tab-panel.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Tab Subtitle */
.tab-subtitle {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.tab-subtitle h4 {
    font-size: 24px;
    color: #0d1430;
    margin: 0 0 10px 0;
    font-weight: 700;
}

.tab-subtitle p {
    font-size: 16px;
    color: #666;
    margin: 0;
    font-style: italic;
    line-height: 1.5;
}

/* Language Grid */
.language-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.language-card {
    display: flex;
    align-items: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    gap: 15px;
}

.language-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: #0d1430;
}

.language-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.language-info {
    flex: 1;
}

.language-info h4 {
    margin: 0 0 5px 0;
    font-size: 18px;
    font-weight: 600;
    color: #0d1430;
}

.language-info .level {
    font-size: 14px;
    color: #666;
    font-style: italic;
}

/* Personal Info Links */
.info-row .value a {
    color: #0d1430;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.info-row .value a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* Soft Skills Section */
.soft-skills-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.soft-skills-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(15px, 3vw, 20px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 15px 10px;
    background: #f8f9fa;
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    gap: 8px;
}

.skill-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: #0d1430;
}

.skill-icon {
    font-size: 24px;
    display: block;
}

.skill-name {
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

/* Technical Details Section */
.technical-details-section {
    margin-bottom: clamp(25px, 5vw, 35px);
}

.technical-details-section h3 {
    font-size: clamp(20px, 4vw, 24px);
    color: #0d1430;
    margin-bottom: clamp(15px, 3vw, 20px);
    border-left: 4px solid #0d1430;
    padding-left: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.tech-category {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.tech-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: #0d1430;
}

.tech-category h4 {
    font-size: 16px;
    color: #0d1430;
    margin: 0 0 15px 0;
    font-weight: 600;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-item {
    background: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    color: #333;
    border: 1px solid #ddd;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: #0d1430;
    color: white;
    border-color: #0d1430;
}

.language-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    font-size: clamp(14px, 2.5vw, 16px);
}

.language-item:last-child {
    border-bottom: none;
}

.language-item .language {
    font-weight: 600;
    color: #0d1430;
}

.language-item .level {
    color: #666;
    font-style: italic;
}



/* Responsive adjustments */
@media (max-width: 768px) {
    .profile-card {
        margin: 0 15px 30px 15px;
        padding: 25px 20px;
    }

    .info-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .info-row .value {
        text-align: left;
        margin-left: 0;
    }

    .hobbies-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 10px;
    }

    .skills {
        margin: 0 15px;
        padding: 25px 20px;
    }
}

@media (max-width: 480px) {
    body > main {
        padding: 10px 0;
        width: 95%;
    }

    .profile-card {
        padding: 20px 15px;
        margin: 0 10px 20px 10px;
    }

    .hobbies-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills {
        padding: 20px 15px;
        margin: 0 10px;
    }

    .skill-bar span {
        margin-bottom: 5px;
    }

    .bar {
        height: 15px;
    }
}