/* =============================================
   CHALLENGE PAGE STYLES
   ============================================= */

/* ---------- Challenge Hero ---------- */
.challenge-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: url('../images/fitness.jpg') center/cover no-repeat;
    padding-top: var(--nav-height);
}

.challenge-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(74, 22, 48, 0.8) 50%, rgba(201, 77, 127, 0.75) 100%);
}

.challenge-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    padding: 40px 24px;
}

.challenge-back-link {
    display: inline-block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: 24px;
    transition: color var(--transition);
}

.challenge-back-link:hover {
    color: var(--color-white);
}

.challenge-badge {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: var(--color-white);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.challenge-hero-title {
    font-size: clamp(3.5rem, 10vw, 7rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.challenge-hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 8px;
}

.challenge-hero-tagline {
    font-size: 1.1rem;
    color: var(--color-pink-200);
    font-weight: 500;
    margin-bottom: 40px;
}

.challenge-hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 24px 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-xl);
}

.challenge-stat {
    text-align: center;
}

.challenge-stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.challenge-stat-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
    display: block;
}

.challenge-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

/* ---------- Container ---------- */
.challenge-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Section Common ---------- */
.challenge-section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.challenge-section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 50px;
    margin-bottom: 16px;
}

.challenge-section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    margin-bottom: 12px;
}

.challenge-section-header p {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

/* ---------- Intro Section ---------- */
.challenge-intro {
    padding: 100px 0;
    background: var(--color-off-white);
}

.challenge-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.challenge-intro-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    margin-bottom: 20px;
}

.challenge-intro-content p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    margin-bottom: 16px;
}

.challenge-intro-content strong {
    color: var(--color-pink-600);
}

.challenge-intro-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.challenge-intro-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

/* ---------- Overview Section ---------- */
.challenge-overview {
    padding: 100px 0;
    background: var(--color-white);
}

.overview-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.overview-card {
    text-align: center;
    padding: 32px 20px;
    background: var(--color-off-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.overview-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-pink-300);
}

.overview-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    border-radius: 50%;
}

.overview-icon svg {
    width: 28px;
    height: 28px;
}

.overview-card h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.overview-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    font-weight: 600;
}

.equipment-note {
    text-align: center;
    padding: 28px;
    background: var(--color-pink-50);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.equipment-note h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--color-pink-700);
}

.equipment-list {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.equipment-item {
    padding: 6px 14px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ---------- Gains Section ---------- */
.challenge-gains {
    padding: 100px 0;
    background: var(--color-off-white);
}

.gains-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.gains-content .challenge-section-tag {
    margin-bottom: 12px;
}

.gains-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    margin-bottom: 28px;
}

.gains-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.gains-list li {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1.02rem;
    color: var(--color-text);
}

.gain-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    min-width: 28px;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    border-radius: 50%;
}

.gain-check svg {
    width: 14px;
    height: 14px;
}

.gains-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.gains-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

/* ---------- Structure Section ---------- */
.challenge-structure {
    padding: 100px 0;
    background: var(--color-white);
}

.structure-timeline {
    max-width: 640px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.timeline-marker {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}

.timeline-marker.marker-primary {
    background: linear-gradient(135deg, var(--color-pink-500), var(--color-pink-600));
    color: var(--color-white);
}

.timeline-content {
    flex: 1;
    padding-bottom: 16px;
}

.timeline-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-badge.badge-primary {
    background: var(--color-pink-500);
    color: var(--color-white);
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.timeline-content p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.timeline-connector {
    width: 1px;
    height: 32px;
    background: var(--color-border);
    margin-left: 23px;
}

.exercise-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.exercise-chip {
    padding: 4px 12px;
    background: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ---------- Week 1 Day Cards ---------- */
.challenge-week1 {
    padding: 100px 0;
    background: var(--color-off-white);
}

.day-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.day-card {
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
}

.day-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--color-pink-300);
}

.day-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.day-number {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-dark);
}

.day-type {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.type-strength {
    background: var(--color-pink-100);
    color: var(--color-pink-600);
}

.type-cardio {
    background: #FFF0E6;
    color: #D4764E;
}

.type-recovery {
    background: #E8F5E9;
    color: #4A8C5C;
}

.type-rest {
    background: #E8EEF5;
    color: #4A6A8C;
}

.day-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.day-card > p {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.day-card .rounds {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
}

.exercise-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.exercise-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--color-off-white);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.exercise-name {
    color: var(--color-text);
}

.exercise-time {
    font-weight: 600;
    color: var(--color-pink-600);
    font-size: 0.85rem;
    white-space: nowrap;
}

.day-card-recovery {
    border-color: #C8E6C9;
    background: linear-gradient(135deg, #F1F8F1, #FFFFFF);
}

.day-card-rest {
    border-color: #BBDEFB;
    background: linear-gradient(135deg, #F0F4F8, #FFFFFF);
}

.day-card-rest h3 {
    color: var(--color-text-light);
}

/* ---------- Weeks 3&4 ---------- */
.challenge-weeks {
    padding: 100px 0;
    background: var(--color-white);
}

.weeks-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.week-block {
    padding: 36px;
    background: var(--color-off-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.week-block:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-pink-300);
}

.week-block-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.week-block-number {
    padding: 4px 12px;
    background: var(--color-pink-100);
    color: var(--color-pink-600);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.week-block h3 {
    font-size: 1.3rem;
}

.week-block > p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.week-goals {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.week-goals li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--color-text);
    line-height: 1.5;
}

.week-goals li::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    min-width: 6px;
    background: var(--color-pink-400);
    border-radius: 50%;
    margin-top: 8px;
}

.week-goals strong {
    color: var(--color-pink-600);
}

/* ---------- CTA Section ---------- */
.challenge-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-pink-500), var(--color-pink-700));
    text-align: center;
}

.cta-content {
    max-width: 540px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.6rem, 3vw, 2rem);
    color: var(--color-white);
    margin-bottom: 12px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
    font-size: 1rem;
}

.challenge-cta .btn-primary {
    background: var(--color-white);
    color: var(--color-pink-600);
    border-color: var(--color-white);
}

.challenge-cta .btn-primary:hover {
    background: var(--color-pink-100);
    transform: translateY(-2px);
}

/* ---------- Tips Section ---------- */
.challenge-tips {
    padding: 100px 0;
    background: var(--color-off-white);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
}

.tip-card {
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
}

.tip-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.tip-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-pink-200);
    line-height: 1;
    margin-bottom: 12px;
}

.tip-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.tip-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ---------- Modifications Section ---------- */
.challenge-modifications {
    padding: 80px 0;
    background: var(--color-white);
}

.modifications-content {
    max-width: 640px;
    margin: 0 auto;
}

.modifications-content h3 {
    font-size: 1.4rem;
    margin-bottom: 24px;
    text-align: center;
}

.modification-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modification-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--color-off-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.modification-item:hover {
    border-color: var(--color-pink-300);
    box-shadow: var(--shadow-sm);
}

.mod-exercise {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
}

.mod-arrow {
    color: var(--color-pink-400);
    font-size: 1.2rem;
    padding: 0 16px;
}

.mod-modified {
    color: var(--color-pink-600);
    font-weight: 500;
    font-size: 0.95rem;
}

/* ---------- Remember Section ---------- */
.challenge-remember {
    padding: 80px 0;
    background: var(--color-pink-50);
}

.remember-content blockquote {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.remember-content blockquote p {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 16px;
    font-style: italic;
}

.remember-content blockquote footer {
    font-size: 0.95rem;
    color: var(--color-pink-700);
    line-height: 1.6;
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */

@media (max-width: 1024px) {
    .overview-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .day-cards {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .challenge-hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .challenge-hero-stats {
        flex-direction: column;
        gap: 20px;
        padding: 24px;
    }

    .challenge-stat-divider {
        width: 40px;
        height: 1px;
    }

    .challenge-intro-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .challenge-intro-image {
        order: -1;
    }

    .challenge-intro-image img {
        height: 280px;
    }

    .overview-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .gains-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .gains-image {
        order: -1;
    }

    .gains-image img {
        height: 280px;
    }

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

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

    .day-cards {
        grid-template-columns: 1fr;
    }

    .challenge-intro,
    .challenge-overview,
    .challenge-gains,
    .challenge-structure,
    .challenge-week1,
    .challenge-weeks,
    .challenge-tips,
    .challenge-remember {
        padding: 72px 0;
    }

    .challenge-modifications {
        padding: 56px 0;
    }

    .challenge-cta {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .overview-cards {
        grid-template-columns: 1fr;
    }

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

    .challenge-hero-title {
        font-size: 3rem;
    }

    .equipment-list {
        flex-direction: column;
        align-items: center;
    }
}