/**
 * HR Zone Specific Styling
 */

/* ============================================
   HR ZONE SECTION
   ============================================ */

.hr-zone-section {
    padding: var(--spacing-3xl) var(--spacing-2xl);
    transition: all var(--transition-slow);
}

.hr-zone-header {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-3xl);
    border-radius: var(--radius-lg);
    margin: 0 0 var(--spacing-2xl) 0;
    background: linear-gradient(135deg, rgba(255, 100, 100, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%);
    border: 2px solid rgba(255, 100, 100, 0.4);
    transition: all var(--transition-slow);
}

.hr-zone-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary-light);
    margin: 0;
    text-align: center;
}

.hr-zone-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
    align-items: center;
}


/* ============================================
   LARGE HR DISPLAY
   ============================================ */

.hr-display {
    text-align: center;
}

.hr-display__value {
    font-family: var(--font-display);
    font-size: var(--font-size-7xl);
    font-weight: var(--font-weight-black);
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(255, 50, 50, 0.6));
}

.hr-display__unit {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 2px;
}

.hr-display__zone {
    font-family: var(--font-primary);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-top: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(255, 50, 50, 0.3) 0%, rgba(255, 140, 0, 0.3) 100%);
    border: 2px solid rgba(255, 100, 100, 0.5);
}


/* ============================================
   ZONE BARS (Horizontal)
   ============================================ */

.zone-bars {
    position: relative;
    width: 100%;
    max-width: 1000px;
}

.zone-bars__container {
    display: flex;
    gap: 8px;
    width: 100%;
}

.zone-box {
    flex: 1;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg) var(--spacing-md);
    transition: all var(--transition-base);
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.zone-box__indicator {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-text-primary);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.8), 0 0 40px currentColor;
    transition: left var(--transition-base);
    display: none;
    z-index: var(--z-base);
}

.zone-box__content {
    text-align: center;
    position: relative;
    z-index: calc(var(--z-base) + 1);
}

.zone-box__name {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
}

.zone-box__desc {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.zone-box__range {
    font-size: var(--font-size-sm);
    opacity: 0.6;
    margin-top: var(--spacing-sm);
}

.zone-box__number {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-black);
    opacity: 0.2;
    text-align: center;
    position: relative;
    z-index: calc(var(--z-base) + 1);
}


/* Zone Colors */
.zone-box--1 {
    background: linear-gradient(135deg, rgba(125, 211, 252, 0.3) 0%, rgba(125, 211, 252, 0.5) 100%);
    border: 2px solid rgba(125, 211, 252, 0.5);
    color: var(--color-zone-1);
}

.zone-box--2 {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.3) 0%, rgba(74, 222, 128, 0.5) 100%);
    border: 2px solid rgba(74, 222, 128, 0.5);
    color: var(--color-zone-2);
}

.zone-box--3 {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.3) 0%, rgba(251, 191, 36, 0.5) 100%);
    border: 2px solid rgba(251, 191, 36, 0.5);
    color: var(--color-zone-3);
}

.zone-box--4 {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.3) 0%, rgba(251, 146, 60, 0.5) 100%);
    border: 2px solid rgba(251, 146, 60, 0.5);
    color: var(--color-zone-4);
}

.zone-box--5 {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.3) 0%, rgba(239, 68, 68, 0.5) 100%);
    border: 2px solid rgba(239, 68, 68, 0.5);
    color: var(--color-zone-5);
}


/* ============================================
   ZONE STATS CARDS
   ============================================ */

.zone-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.zone-card {
    background: linear-gradient(135deg, rgba(30, 35, 60, 0.8) 0%, rgba(20, 25, 50, 0.8) 100%);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid rgba(255, 100, 100, 0.2);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.zone-card:hover {
    transform: scale(1.05);
    border-color: rgba(255, 100, 100, 0.5);
}

.zone-card--1,
.zone-1 {
    border-left: 4px solid var(--color-zone-1);
    box-shadow: 0 0 15px rgba(125, 211, 252, 0.3);
}

.zone-card--2,
.zone-2 {
    border-left: 4px solid var(--color-zone-2);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
}

.zone-card--3,
.zone-3 {
    border-left: 4px solid var(--color-zone-3);
    box-shadow: 0 0 15px rgba(251, 191, 36, 0.3);
}

.zone-card--4,
.zone-4 {
    border-left: 4px solid var(--color-zone-4);
    box-shadow: 0 0 15px rgba(251, 146, 60, 0.3);
}

.zone-card--5,
.zone-5 {
    border-left: 4px solid var(--color-zone-5);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}