/* Basic Reset and Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

html {
    height: 100%;
    height: -webkit-fill-available;
    overflow: hidden;
    background-color: #000;
}

body {
    height: 100%;
    height: -webkit-fill-available;
    min-height: 100vh;
    min-height: -webkit-fill-available;
    margin: 0;
    padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom) 0;
    overflow: hidden;
    background-color: #000;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    position: fixed;
    width: 100%;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
}

/* Main Stopwatch Container */
.stopwatch-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
    overflow: hidden;
    padding-top: max(16px, env(safe-area-inset-top));
}

/* Time Display */
.time-display {
    font-size: clamp(4.8rem, 23vw, 7.5rem);
    font-weight: 100;
    text-align: center;
    letter-spacing: -0.019em;
    padding: 0;
    margin-top: min(25vh, 17vh);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-variant-numeric: tabular-nums;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Style individual time parts */
.time-part {
    display: inline-block;
    line-height: 1;
}

/* Style the separators specifically */
.colon,
.dot {
    margin-left: 0.035em;
    margin-right: 0.04em;
    /* Adjust bottom margin if needed for perfect vertical alignment */
    margin-bottom: 0.17em; /* User specified margin */
     /* Keep separators light */
    font-weight: 100; /* Match main display weight */
}

/* Controls (Buttons) */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5vw;
    margin-top: 9.5vh;
    width: 100%;
    max-width: 100%;
    position: relative;
}

.control-button {
    width: min(82px, 22vw);
    height: min(82px, 22vw);
    border-radius: 50%;
    border: none;
    font-size: 17px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(128, 128, 128, 0.2);
    color: inherit;
    padding: 0;
    cursor: pointer;
}

.control-button:disabled {
    background-color: rgba(50, 50, 50, 0.3);
    color: #555;
    cursor: default;
    opacity: 0.7;
}

/* Button States */
.control-button.start {
    color: #3cd14b;
    background-color: rgba(49, 164, 61, 0.3);
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.control-button.start:active,
.control-button.start:focus {
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.control-button.stop {
    background-color: rgba(255, 69, 58, 0.2);
    color: #FF453A;
}

.control-button.reset-lap {
    background-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

.control-button.reset-lap:disabled {
    opacity: 0.4;
}

/* Laps Container */
.laps {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    /* padding: 0 15px; */
    /* margin-top: 25px; */
    scrollbar-width: none;
    -ms-overflow-style: none;
    max-height: calc(100vh - 450px);
    margin-bottom: auto;
}

.laps::-webkit-scrollbar {
    display: none;
}

.lap-entry {
    display: flex;
    justify-content: space-between;
    padding: 11px 20px;
    font-size: 17px;
    font-weight: 400;
    color: #fff;
    border-top: 0.5px solid rgba(255, 255, 255, 0.16);
}

.lap-entry:last-child {
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.16);
}

/* Time Display within Lap */
.lap-time {
    /* --- Use System Font Stack & Fix Shaking --- */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-variant-numeric: tabular-nums; /* Keep this! */
    /* Add flex layout */
    display: flex;
    align-items: center;
    /* --- Set Font Weight --- */
    font-weight: 400; /* Make lap time thicker */
    /* Restore font size */
    font-size: 16px;
    padding: 0;
}

/* Adjust separator style within lap time */
.lap-time .colon,
.lap-time .dot {
    margin-left: 0.1em;
    margin-right: 0.1em;
    font-weight: 300; /* Keep lap separators lighter */
    /* Adjust vertical alignment if needed */
     margin-bottom: 0.05em; /* Trial value for lap time separators */
}

/* Indicator Dots */
.indicator-dots {
    display: flex;
    gap: 11px;
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.indicator-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.dot-white {
    background-color: white;
}

.dot-grey {
    background-color: rgba(255, 255, 255, 0.3);
}

/* Bottom Navigation */
.bottom-nav {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    background-color: #000000;
    width: 100%;
    position: fixed;
    bottom: 0;
    z-index: 1000;
    height: 49px;
    margin: 0;
    gap: 40px; /* Add significant gap between items */
    max-width: 400px; /* Limit the width to keep icons from spreading too far */
    left: 50%;
    transform: translateX(-50%); /* Center the nav container */
}

/* Nav Item */
.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #8E8E93;
    padding: 8px 0;
    min-width: 60px;
    position: relative;
}

.nav-item.active {
    color: #FF9500;
}

/* Icon container */
span[id^="icon-"] {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 30px;
    width: 100%;
    margin-bottom: 2px;
}

.nav-icon {
    background-color: currentColor;
    -webkit-mask-image: var(--icon-url);
    mask-image: var(--icon-url);
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
}

#worldclock-icon {
    width: var(--icon-size-world-clock);
    height: var(--icon-size-world-clock);
    transform: translateY(var(--icon-offset-world-clock));
}

#alarms-icon {
    width: var(--icon-size-alarms);
    height: var(--icon-size-alarms);
    transform: translateY(var(--icon-offset-alarms));
}

#stopwatch-icon {
    width: var(--icon-size-stopwatch);
    height: var(--icon-size-stopwatch);
    transform: translateY(var(--icon-offset-stopwatch));
}

#timers-icon {
    width: var(--icon-size-timers);
    height: var(--icon-size-timers);
    transform: translateY(var(--icon-offset-timers));
}

.nav-label {
    font-size: 10px;
    font-weight: 400;
    text-align: center;
}

/* Individual icon containers */
:root {
    /* Default values */
    --icon-size-world-clock: 21px;
    --icon-size-alarms: 28px;
    --icon-size-stopwatch: 25px;
    --icon-size-timers: 25px;
    
    --icon-offset-world-clock: -3px;
    --icon-offset-alarms: 1px;
    --icon-offset-stopwatch: 0px;
    --icon-offset-timers: 0px;
}

@supports (padding: max(0px)) {
    .bottom-nav {
        height: calc(49px + env(safe-area-inset-bottom));
    }
}

/* PWA Status Bar */
@media all and (display-mode: standalone) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .stopwatch-container {
        padding-top: max(16px, env(safe-area-inset-top));
    }
    
    .bottom-nav {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(49px + env(safe-area-inset-bottom));
    }
}

/* Landscape Orientation Adjustments */
@media screen and (orientation: landscape) {
    .time-display {
        margin-top: min(15vh, 80px);
        font-size: clamp(3.8rem, 17vw, 6rem);
    }
    
    .controls {
        margin-top: min(6vh, 35px);
    }
    
    .control-button {
        width: min(72px, 19vw);
        height: min(72px, 19vw);
    }

    .bottom-nav {
        height: calc(40px + env(safe-area-inset-bottom));
    }
}

/* Safe Area Adjustments for iOS */
@supports (padding: max(0px)) {
    .bottom-nav {
        padding-bottom: max(0px, env(safe-area-inset-bottom));
        padding-left: max(15px, env(safe-area-inset-left));
        padding-right: max(15px, env(safe-area-inset-right));
    }
}