/* ========================================
   Collaborations Section
   ======================================== */
.collaborations {
    padding: 10px 40px 100px;
}

.collab-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
    align-items: center;
}

.collab-logo {
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.collab-logo:hover {
    transform: translateY(-3px);
}

.collab-logo img {
    height: 65px;
    width: 168px;
    object-fit: contain;
    transition: all 0.3s ease;
}

.collab-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background: #fff;
    padding: 10px 40px 100px;
}

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

.contact-email {
    text-align: center;
    margin-bottom: 40px;
}

.contact-email a {
    font-size: 1rem;
    color: #333;
    transition: color 0.3s ease;
}

.contact-email a:hover {
    color: #666;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: #333;
}

.form-label .required {
    color: #e74c3c;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #333;
    background: #fff;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #aaa;
}

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

.form-submit {
    background: #1a1a1a;
    color: #fff;
    padding: 15px 40px;
    border: none;
    border-radius: 30px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-end;
}

.form-submit:hover {
    background: #333;
    transform: translateY(-2px);
}

.form-submit:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.form-message {
    padding: 15px 20px;
    border-radius: 10px;
    font-size: 0.9rem;
    display: none;
}

.form-message.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 40px;
    text-align: center;
}

.footer-text {
    font-size: 0.85rem;
    color: #888;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 30px;
    }
    
    .nav-links {
        gap: 25px;
    }
    
    section {
        padding: 80px 30px;
    }
    
    .overview-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .values-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .collab-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .video-gallery {
        gap: 30px;
    }
}

/* Mobile Landscape */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
        height: 70px;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    section {
        padding: 60px 20px;
    }

    .hero {
        min-height: 100vh;
        background: url("../images/main/main.png") no-repeat center center;
        background-size: cover;
        padding: 100px 20px 60px;
    }


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

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

    .section-title {
        font-size: 1.75rem;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .value-card {
        padding: 30px 20px;
    }

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

    .service-card {
        padding: 30px 20px;
    }

    .timeline-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }

    .timeline-tab {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .timeline-month {
        padding: 15px 0;
    }

    .collab-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .collab-logo {
        height: 60px;
        padding: 15px 10px;
    }

    .contact-container {
        padding: 0;
    }

    .form-submit {
        width: 100%;
    }

    /* Video Gallery Mobile */
    .video-gallery {
        flex-direction: column;
        gap: 20px;
    }

    .video-dots-nav {
        flex-direction: row;
        justify-content: center;
        order: 2;
    }

    .video-main-wrapper {
        order: 1;
    }

    .video-apply-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .video-caption {
        font-size: 1.1rem;
        margin-top: 20px;
    }
}

.nav-logo img {
    width: 152px;
    height: 90px;
}

/* Mobile Portrait */
@media (max-width: 480px) {

    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 0.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .overview-card {
        padding: 25px 20px;
    }
    
    .timeline-grid {
        grid-template-columns: 1fr;
    }
    
    .collab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-wrapper {
        border-radius: 15px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none !important;
}

/* Loading Animation */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Scroll Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Form Validation Styles
   ======================================== */
.form-hint {
    font-size: 0.75rem;
    color: #888;
    margin-top: 4px;
}

.form-error {
    font-size: 0.8rem;
    color: #e74c3c;
    display: none;
    margin-top: 4px;
}

.form-input.input-error,
.form-textarea.input-error {
    border-color: #e74c3c;
    background: #fff5f5;
}

.form-input.input-error:focus,
.form-textarea.input-error:focus {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

/* Character counter color when limit exceeded */
#message-count {
    transition: color 0.3s ease;
}