/* [1] About Sayfası Özel CSS - Version Améliorée */

/* [1.1] Active menü link stili */
.nav-bar .main-menu a.active {
    color: #87cefa !important;
    text-shadow: 0 0 10px #87cefa;
    transform: translateY(-2px);
}

/* [2] About Ana Container */
.about-main {
    padding: 0;
    background: linear-gradient(135deg, #e6f7ff 0%, #cce6ff 100%);
}

/* [3] About Banner Section */
.about-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4rem 10vw;
    background: linear-gradient(135deg, #1e90ff 0%, #0056b3 100%);
    color: white;
    margin-bottom: 0;
}

/* [3.1] Banner Content */
.about-banner-content {
    flex: 1;
    padding-right: 3rem;
}

.about-banner-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.about-banner-subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    opacity: 0.9;
    line-height: 1.5;
}

/* [3.2] Banner Image */
.about-banner-image {
    flex: 0 0 300px;
    text-align: center;
}

.about-banner-image img {
    width: 100%;
    max-width: 300px;
    height: 300px;
    border-radius: 15px;
    object-fit: cover;
    border: 5px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* [4] About Content Container */
.about-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* [5] Section Styling */
.about-section {
    background: white;
    margin: 3rem 0;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(30, 144, 255, 0.1);
    border-left: 5px solid var(--ping);
}

.about-section h2 {
    color: var(--ping);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.about-section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--ping);
    margin: 0.5rem auto;
    border-radius: 2px;
}

/* [6] Introduction Section */
.intro-section {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f7ff 100%);
    border-left: 5px solid #0056b3;
    text-align: center;
}

.intro-description {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #333;
    max-width: 900px;
    margin: 0 auto;
}

/* [7] Profile Section */
.profile-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.profile-item {
    background: linear-gradient(135deg, #f8fbff 0%, #e6f7ff 100%);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(30, 144, 255, 0.2);
}

.profile-item h3 {
    color: var(--ping);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.profile-item p {
    color: #333;
    font-size: 1rem;
    margin: 0;
}

/* [8] Experience Section */
.experience-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
}

.experience-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
    text-align: center;
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: rgba(30, 144, 255, 0.05);
    border-radius: 10px;
    border-left: 4px solid var(--ping);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* [8.1] Experience Cards */
.experience-card {
    background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(30, 144, 255, 0.15);
    border: 1px solid rgba(30, 144, 255, 0.2);
    transition: transform 0.3s ease;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(30, 144, 255, 0.25);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.experience-header h3 {
    color: #0056b3;
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
}

.experience-icon {
    font-size: 2rem;
    opacity: 0.8;
}

.underwater-disciplines {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.underwater-disciplines span {
    background: var(--ping);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

.experience-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-top: 1rem;
    border: 2px solid rgba(30, 144, 255, 0.1);
}

/* [9] Academic Section */
.academic-section {
    background: linear-gradient(135deg, #e6f7ff 0%, #cce6ff 100%);
    border-left: 5px solid #0056b3;
}

.academic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.academic-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(30, 144, 255, 0.1);
    border: 1px solid rgba(30, 144, 255, 0.2);
    transition: transform 0.3s ease;
}

.academic-item:hover {
    transform: translateY(-3px);
}

.academic-item h3 {
    color: var(--ping);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.academic-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

/* [10] Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(30, 144, 255, 0.1);
    border: 1px solid rgba(30, 144, 255, 0.2);
}

.skill-item h3 {
    color: var(--ping);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.skill-item h3::before {
    content: '▶';
    color: var(--ping);
    margin-right: 0.5rem;
    font-size: 0.8rem;
}

.skill-item p {
    color: #555;
    line-height: 1.6;
    font-size: 1rem;
}

/* [11] Teaching Approach Section */
.approach-section {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f7ff 100%);
    border-left: 5px solid #0056b3;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.approach-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    border: 2px solid rgba(30, 144, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.approach-item.full-width {
    grid-column: 1 / -1;
    text-align: center;
    background: linear-gradient(135deg, #e6f7ff 0%, #cce6ff 100%);
}

.approach-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--ping) 0%, #0056b3 100%);
}

.approach-item h3 {
    color: #0056b3;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.approach-item p {
    color: #333;
    line-height: 1.7;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.approach-visual img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid rgba(30, 144, 255, 0.2);
}

/* [12] Philosophy Section */
.philosophy-section {
    background: linear-gradient(135deg, #1e90ff 0%, #0056b3 100%);
    color: white;
    text-align: center;
    border-left: none;
}

.philosophy-section h2 {
    color: white;
}

.philosophy-section h2::after {
    background: rgba(255, 255, 255, 0.3);
}

.philosophy-quote {
    font-size: 1.3rem;
    line-height: 1.8;
    font-style: italic;
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.philosophy-visual img {
    width: 100%;
    max-width: 400px;
    height: 250px;
    object-fit: cover;
    border-radius: 15px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* [13] Responsive Design */

/* [13.1] Tablet */
@media (max-width: 1024px) {
    .about-banner {
        padding: 3rem 5vw;
    }
    
    .about-banner-content h1 {
        font-size: 2.5rem;
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .approach-grid {
        grid-template-columns: 1fr;
    }
}

/* [13.2] Mobile */
@media (max-width: 768px) {
    
    /* [13.2.1] Banner Mobile */
    .about-banner {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1rem;
    }
    
    .about-banner-content {
        padding-right: 0;
        margin-bottom: 2rem;
    }
    
    .about-banner-content h1 {
        font-size: 2rem;
    }
    
    .about-banner-subtitle {
        font-size: 1.1rem;
    }
    
    .about-banner-image {
        flex: none;
    }
    
    .about-banner-image img {
        width: 250px;
        height: 250px;
    }
    
    /* [13.2.2] Content Mobile */
    .about-content {
        padding: 0 1rem;
    }
    
    .about-section {
        padding: 2rem 1.5rem;
        margin: 2rem 0;
    }
    
    .about-section h2 {
        font-size: 1.6rem;
    }
    
    /* [13.2.3] Grid Mobile */
    .profile-info {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .academic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .approach-grid {
        grid-template-columns: 1fr;
    }
    
    /* [13.2.4] Experience Mobile */
    .experience-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .underwater-disciplines {
        justify-content: center;
    }
}

/* [13.3] Large Mobile */
@media (max-width: 480px) {
    .about-banner-content h1 {
        font-size: 1.7rem;
    }
    
    .about-section {
        padding: 1.5rem 1rem;
    }
    
    .academic-grid {
        grid-template-columns: 1fr;
    }
    
    .about-banner-image img {
        width: 200px;
        height: 200px;
    }
}

/* [14] Animation for Page Load */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-section {
    animation: slideInUp 0.6s ease-out forwards;
}

.intro-section {
    animation-delay: 0.1s;
}

.profile-section {
    animation-delay: 0.2s;
}

.experience-section {
    animation-delay: 0.3s;
}

.academic-section {
    animation-delay: 0.4s;
}

.skills-section {
    animation-delay: 0.5s;
}

.approach-section {
    animation-delay: 0.6s;
}

.philosophy-section {
    animation-delay: 0.7s;
}