/* Build with AI Page Styles */

/* Hero */
.bwai-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 5% 80px;
    position: relative;
}

.bwai-hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.bwai-hero-logo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.bwai-hero-logo img {
    width: 100%;
    max-width: 420px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s ease;
}

.bwai-hero-logo img:hover {
    transform: scale(1.03);
}

.bwai-hero-info h1 {
    font-size: clamp(40px, 5vw, 64px);
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.1;
}

.bwai-dates-container {
    width: 100%;
    padding: 20px 5% 0;
    display: flex;
    justify-content: center;
}

.bwai-event-dates {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.bwai-main-date {
    font-size: 32px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.bwai-main-deadline {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 500;
}

.bwai-hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
    line-height: 1.7;
}

/* About Cards */
.bwai-about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.bwai-about-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: var(--glass-shadow);
}

.bwai-about-card:hover {
    transform: translateY(-8px);
    border-color: var(--google-blue);
}

.bwai-about-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.bwai-about-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.bwai-about-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Speakers */
.bwai-speakers-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: -40px;
    margin-bottom: 50px;
}

.bwai-speakers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.bwai-speaker-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: var(--glass-shadow);
}

.bwai-speaker-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--google-blue);
}

.bwai-speaker-photo {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    margin: 0 auto 24px;
    overflow: hidden;
    border: 4px solid var(--card-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: all 0.4s ease;
}

.bwai-speaker-card:hover .bwai-speaker-photo {
    border-color: var(--google-blue);
    box-shadow: 0 12px 30px rgba(66, 133, 244, 0.3);
    transform: scale(1.05);
}

.bwai-speaker-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bwai-speaker-info h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.bwai-speaker-company {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    background: rgba(234, 67, 53, 0.1);
    color: var(--google-red);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Schedule Section */
.bwai-schedule-section {
    padding: 60px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.bwai-schedule-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
}

@media (min-width: 768px) {
    .bwai-schedule-container {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

.bwai-day-title {
    font-size: 24px;
    color: var(--google-white);
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 2px solid rgba(253, 0, 0, 0.2);
    padding-bottom: 10px;
}

.bwai-timeline {
    position: relative;
    padding-left: 30px;
}

.bwai-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 7px;
    height: 100%;
    width: 2px;
    background: var(--card-border);
}

.bwai-timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.bwai-timeline-item:last-child {
    margin-bottom: 0;
}

.bwai-timeline-item::before {
    content: '';
    position: absolute;
    top: 5px;
    left: -30px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--google-red);
    border: 3px solid var(--body-bg);
}

.bwai-timeline-time {
    font-size: 14px;
    font-weight: 700;
    color: var(--google-red);
    margin-bottom: 5px;
}

.bwai-timeline-content h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.bwai-timeline-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Location Section */
.bwai-location-section {
    padding: 60px 5%;
}

.bwai-location-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 50px;
    text-align: center;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    box-shadow: var(--glass-shadow);
    transition: all 0.4s ease;
}

.bwai-location-card:hover {
    transform: translateY(-8px);
    border-color: var(--google-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.bwai-location-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(66, 133, 244, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--google-blue);
}

.bwai-location-name {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.bwai-location-desc {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 30px;
    line-height: 1.6;
}

.bwai-map-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--google-blue);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.bwai-map-button:hover {
    background: #3874d6;
    transform: scale(1.05);
    box-shadow: 0 8px 24px rgba(66, 133, 244, 0.4);
}

/* FAQ Section */
.bwai-faq-section {
    padding: 60px 5%;
    max-width: 900px;
    margin: 0 auto;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-question {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.02);
    user-select: none;
}

.faq-item.active .faq-question {
    color: var(--google-blue);
}

.faq-toggle {
    font-size: 24px;
    color: var(--google-blue);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: var(--card-bg);
}

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

/* Sponsors Marquee */
.bwai-sponsors-section {
    padding: 60px 0;
    overflow: hidden;
}

.bwai-sponsors-marquee {
    width: 100%;
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.bwai-sponsors-track {
    display: flex;
    gap: 60px;
    align-items: center;
    width: max-content;
    will-change: transform;
}

.bwai-sponsor-item {
    flex-shrink: 0;
    width: 160px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 15px 20px;
    transition: all 0.3s ease;
}

.bwai-sponsor-item:hover {
    border-color: var(--google-blue);
    transform: scale(1.05);
}

.bwai-sponsor-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%) brightness(0.8);
    opacity: 0.6;
    transition: all 0.3s ease;
}

.bwai-sponsor-item:hover img {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
}

body.light-mode .bwai-sponsor-item img {
    filter: grayscale(100%) brightness(1.2);
    opacity: 0.5;
}

body.light-mode .bwai-sponsor-item:hover img {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
}



/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--google-blue);
    color: #fff;
    border: none;
    outline: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(66, 133, 244, 0.4);
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background: #3874d6;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(66, 133, 244, 0.5);
}

.scroll-to-top svg {
    stroke: #fff;
}

/* Responsive */
@media (max-width: 992px) {
    .bwai-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .bwai-hero-logo img {
        max-width: 300px;
    }

    .bwai-hero-info h1 {
        font-size: 36px;
    }

    .bwai-date-badge {
        justify-content: center;
    }

    .bwai-about-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }

    .bwai-speakers-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .bwai-hero {
        padding: 100px 5% 60px;
    }

    .bwai-hero-info h1 {
        font-size: 32px;
    }

    .bwai-hero-desc {
        font-size: 15px;
    }

    .bwai-speakers-subtitle {
        font-size: 15px;
        margin-top: -30px;
        margin-bottom: 30px;
    }

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

/* iPhone 14 Pro Max & Other Mobile Layout Adjustments */
@media (max-width: 480px) {
    .bwai-hero {
        padding: 90px 5% 40px;
    }

    .bwai-hero-content {
        gap: 20px;
    }

    .bwai-hero-logo img {
        max-width: 260px;
    }

    .bwai-hero-info h1 {
        font-size: 32px;
    }

    .bwai-hero-desc {
        font-size: 15px;
        margin-bottom: 24px;
    }

    .bwai-hero-info .cta-button {
        display: block;
        width: 100%;
        text-align: center;
        padding: 14px 24px;
    }

    .bwai-main-date {
        font-size: 24px;
    }

    .bwai-main-deadline {
        font-size: 16px;
    }

    .bwai-about-card, .bwai-speaker-card {
        padding: 24px 20px;
    }

    .bwai-speaker-photo {
        width: 120px;
        height: 120px;
        margin-bottom: 16px;
    }

    .bwai-speaker-info h3 {
        font-size: 18px;
    }

    .bwai-schedule-section, .bwai-location-section, .bwai-faq-section {
        padding: 40px 5%;
    }

    .bwai-day-title {
        font-size: 20px;
        margin-bottom: 24px;
    }

    .bwai-timeline-item {
        margin-bottom: 24px;
    }

    .bwai-timeline-time {
        font-size: 13px;
    }

    .bwai-timeline-content h4 {
        font-size: 16px;
    }

    .bwai-timeline-content p {
        font-size: 14px;
    }

    .bwai-location-card {
        padding: 30px 20px;
    }

    .bwai-location-name {
        font-size: 24px;
    }

    .bwai-location-desc {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .bwai-location-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 16px;
    }

    .bwai-map-button {
        padding: 12px 20px;
        font-size: 14px;
        width: 100%;
        justify-content: center;
    }

    .faq-question {
        padding: 16px 20px;
        font-size: 15px;
    }

    .faq-answer p {
        padding: 0 20px 16px;
        font-size: 14px;
    }

    .bwai-sponsor-item {
        width: 130px;
        height: 65px;
        padding: 10px;
    }

    .bwai-sponsors-track {
        gap: 30px;
    }
}