/* ============================================
           MOBILE APP DEVELOPMENT SPECIFIC STYLES
        ============================================ */

        /* Expertise Section */
        .expertise-section {
            padding: 120px 5%;
            background: transparent;
        }

        .expertise-grid {
            max-width: 1400px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
        }

        .expertise-card {
            padding: 3rem 2.5rem;
            background: #ffffff;
            border: 1px solid rgba(28, 55, 101, 0.15);
            border-radius: 24px;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            position: relative;
            overflow: hidden;
        }

        .expertise-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .expertise-card:hover::before {
            transform: scaleX(1);
        }

        .expertise-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(28, 55, 101, 0.15);
            border-color: var(--primary-blue);
        }

        .expertise-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, rgba(28, 55, 101, 0.1), rgba(72, 145, 86, 0.1));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 2rem;
            font-size: 1.75rem;
            color: var(--primary-blue);
        }

        .expertise-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1.25rem;
        }

        .expertise-features {
            list-style: none;
            padding: 0;
            margin-top: 1.5rem;
        }

        .expertise-features li {
            padding: 0.75rem 0;
            color: #4a5568;
            display: flex;
            align-items: start;
            gap: 0.75rem;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .expertise-features li i {
            color: var(--primary-green);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        /* Process Section */
        .process-section {
            padding: 120px 5%;
            background: rgba(72, 145, 86, 0.02);
        }

        .process-timeline {
            max-width: 1400px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
        }

        .phase-card {
            padding: 3rem 2.5rem;
            background: #ffffff;
            border: 1px solid rgba(28, 55, 101, 0.15);
            border-radius: 24px;
            transition: all 0.4s ease;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            position: relative;
        }

        .phase-number {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
            opacity: 0.3;
        }

        .phase-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1.25rem;
        }

        .phase-card p {
            color: #4a5568;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .phase-features {
            list-style: none;
            padding: 0;
        }

        .phase-features li {
            padding: 0.75rem 0;
            color: #4a5568;
            display: flex;
            align-items: start;
            gap: 0.75rem;
            font-size: 0.95rem;
        }

        .phase-features li i {
            color: var(--primary-green);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        .phase-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(28, 55, 101, 0.15);
        }

        /* Solutions Section */
        .solutions-section {
            padding: 120px 5%;
            background: transparent;
        }

        .solutions-grid {
            max-width: 1400px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
        }

        .solution-card {
            padding: 3rem 2.5rem;
            background: #ffffff;
            border: 1px solid rgba(28, 55, 101, 0.15);
            border-radius: 24px;
            transition: all 0.4s ease;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        }

        .solution-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1.25rem;
        }

        .solution-card p {
            color: #4a5568;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .solution-features {
            list-style: none;
            padding: 0;
        }

        .solution-features li {
            padding: 0.75rem 0;
            color: #4a5568;
            display: flex;
            align-items: start;
            gap: 0.75rem;
            font-size: 0.95rem;
        }

        .solution-features li i {
            color: var(--primary-green);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        .solution-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(28, 55, 101, 0.15);
        }

        /* Standards Section */
        .standards-section {
            padding: 120px 5%;
            background: rgba(28, 55, 101, 0.02);
        }

        .standards-grid {
            max-width: 1400px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .standard-card {
            padding: 2.5rem 2rem;
            background: #ffffff;
            border: 1px solid rgba(28, 55, 101, 0.15);
            border-radius: 20px;
            transition: all 0.3s ease;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
        }

        .standard-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .standard-card h3 i {
            color: var(--primary-blue);
            font-size: 1.5rem;
        }

        .standard-card p {
            color: #4a5568;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .standard-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 36px rgba(28, 55, 101, 0.12);
        }

        /* Case Study Section */
        .case-study-section {
            padding: 120px 5%;
            background: linear-gradient(135deg, rgba(28, 55, 101, 0.03), rgba(72, 145, 86, 0.03));
        }

        .case-study-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .case-study-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .case-study-header h3 {
            font-size: 2rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1rem;
        }

        .case-study-header p {
            font-size: 1.125rem;
            color: #4a5568;
            line-height: 1.7;
        }

        .case-study-content {
            background: #ffffff;
            border-radius: 24px;
            padding: 3rem;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.08);
        }

        .case-study-challenge {
            margin-bottom: 3rem;
        }

        .case-study-challenge h4 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }

        .case-study-challenge p {
            color: #4a5568;
            line-height: 1.7;
        }

        .case-study-solution {
            margin-bottom: 3rem;
        }

        .case-study-solution h4 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }

        .solution-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .solution-features-grid li {
            list-style: none;
            padding: 1rem;
            background: rgba(72, 145, 86, 0.05);
            border-radius: 12px;
            color: #4a5568;
            font-size: 0.95rem;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
            padding-top: 3rem;
            border-top: 1px solid rgba(28, 55, 101, 0.1);
        }

        .metric-item {
            text-align: center;
        }

        .metric-value {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }

        .metric-label {
            color: #4a5568;
            font-size: 0.95rem;
            font-weight: 500;
        }

        /* Packages Section */
        .packages-section {
            padding: 120px 5%;
            background: transparent;
        }

        .packages-grid {
            max-width: 1400px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
        }

        .package-card {
            padding: 3rem 2.5rem;
            background: #ffffff;
            border: 2px solid rgba(28, 55, 101, 0.15);
            border-radius: 24px;
            transition: all 0.4s ease;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            position: relative;
        }

        .package-card.featured {
            border-color: var(--primary-blue);
            transform: scale(1.05);
        }

        .package-badge {
            position: absolute;
            top: -12px;
            right: 30px;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .package-card h3 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 1rem;
        }

        .package-description {
            color: #4a5568;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .package-features {
            list-style: none;
            padding: 0;
            margin-bottom: 2rem;
        }

        .package-features li {
            padding: 0.75rem 0;
            color: #4a5568;
            display: flex;
            align-items: start;
            gap: 0.75rem;
            font-size: 0.95rem;
        }

        .package-features li i {
            color: var(--primary-green);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        .package-timeline {
            padding: 1.5rem;
            background: rgba(28, 55, 101, 0.05);
            border-radius: 12px;
            margin-top: 2rem;
        }

        .package-timeline strong {
            color: #1a1a1a;
            font-weight: 600;
        }

        .package-best-for {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(28, 55, 101, 0.1);
            font-size: 0.9rem;
            color: #4a5568;
        }

        .package-best-for strong {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .package-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(28, 55, 101, 0.15);
        }

        .package-card.featured:hover {
            transform: scale(1.05) translateY(-8px);
        }

        /* FAQ Section */
        .faq-section {
            padding: 120px 5%;
            background: rgba(72, 145, 86, 0.02);
        }

        .faq-container {
            max-width: 900px;
            margin: 60px auto 0;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid rgba(28, 55, 101, 0.15);
            border-radius: 16px;
            margin-bottom: 1.5rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-question {
            padding: 2rem 2.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 2rem;
            transition: all 0.3s ease;
        }

        .faq-question h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: #1a1a1a;
            margin: 0;
        }

        .faq-question i {
            color: var(--primary-blue);
            font-size: 1.25rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-question:hover {
            background: rgba(28, 55, 101, 0.02);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-content {
            padding: 0 2.5rem 2rem 2.5rem;
            color: #4a5568;
            line-height: 1.7;
        }

        .faq-item:hover {
            box-shadow: 0 8px 24px rgba(28, 55, 101, 0.08);
        }

        /* Dark Theme Styles */
        body.dark-theme .expertise-card,
        body.dark-theme .phase-card,
        body.dark-theme .solution-card,
        body.dark-theme .standard-card,
        body.dark-theme .package-card,
        body.dark-theme .faq-item,
        body.dark-theme .case-study-content {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.1);
        }

        body.dark-theme .expertise-card h3,
        body.dark-theme .phase-card h3,
        body.dark-theme .solution-card h3,
        body.dark-theme .standard-card h3,
        body.dark-theme .package-card h3,
        body.dark-theme .faq-question h3,
        body.dark-theme .case-study-header h3 {
            color: var(--light-text);
        }

        body.dark-theme .expertise-card p,
        body.dark-theme .phase-card p,
        body.dark-theme .solution-card p,
        body.dark-theme .standard-card p,
        body.dark-theme .package-description,
        body.dark-theme .faq-answer-content,
        body.dark-theme .case-study-header p,
        body.dark-theme .case-study-challenge p {
            color: var(--dark-text-light);
        }

        body.dark-theme .expertise-features li,
        body.dark-theme .phase-features li,
        body.dark-theme .solution-features li,
        body.dark-theme .package-features li {
            color: var(--dark-text-light);
        }

        body.dark-theme .process-section,
        body.dark-theme .standards-section,
        body.dark-theme .faq-section {
            background: rgba(255, 255, 255, 0.02);
        }

        body.dark-theme .case-study-section {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(72, 145, 86, 0.05));
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .expertise-grid,
            .process-timeline,
            .solutions-grid,
            .standards-grid,
            .packages-grid {
                grid-template-columns: 1fr;
            }

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

            .solution-features-grid {
                grid-template-columns: 1fr;
            }

            .package-card.featured {
                transform: scale(1);
            }

            .package-card.featured:hover {
                transform: translateY(-8px);
            }
        }