/* ============================================================
   styles.css — Glassmorphism + Electric Blue
   ============================================================ */

:root {
    --blue:       #3B82F6;
    --blue-light: #60A5FA;
    --blue-glow:  rgba(59,130,246,0.35);
    --blue-dim:   rgba(59,130,246,0.10);
    --blue-dim2:  rgba(59,130,246,0.05);

    --bg:         #03050A;
    --glass:      rgba(255,255,255,0.04);
    --glass-hi:   rgba(255,255,255,0.08);
    --border:     rgba(255,255,255,0.08);
    --border-hi:  rgba(59,130,246,0.4);

    --text:       #F1F5F9;
    --text-2:     #94A3B8;
    --text-3:     #475569;

    --green:  #22D3A5;
    --yellow: #FBBF24;
    --red:    #F87171;

    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 22px;
    --r-xl: 28px;

    --font-display: 'Syne', sans-serif;
    --font-body:    'Inter', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 14px;
    overflow-x: hidden;
}

/* ── Background Scene ───────────────────────────────────── */
.bg-scene {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.22;
}
.blob-1 {
    width: 550px; height: 550px;
    background: radial-gradient(circle, #3B82F6, transparent 65%);
    top: -160px; left: -120px;
    animation: drift 14s ease-in-out infinite;
}
.blob-2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, #1D4ED8, transparent 65%);
    bottom: -100px; right: -80px;
    animation: drift 18s ease-in-out infinite reverse;
    opacity: 0.15;
}
.blob-3 {
    width: 280px; height: 280px;
    background: radial-gradient(circle, #06B6D4, transparent 65%);
    top: 45%; left: 55%;
    animation: drift 22s ease-in-out infinite;
    opacity: 0.10;
}
@keyframes drift {
    0%,100% { transform: translate(0,0) scale(1); }
    33%      { transform: translate(30px,-25px) scale(1.04); }
    66%      { transform: translate(-20px,20px) scale(0.97); }
}

/* Subtle grid overlay */
.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
}

/* ── Header ─────────────────────────────────────────────── */
.header {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 36px;
    border-bottom: 1px solid var(--border);
    background: rgba(3,5,10,0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-pulse {
    width: 10px; height: 10px;
    background: var(--blue);
    border-radius: 50%;
    box-shadow: 0 0 0 0 var(--blue-glow);
    animation: logo-ping 2s ease infinite;
}
@keyframes logo-ping {
    0%   { box-shadow: 0 0 0 0 var(--blue-glow); }
    70%  { box-shadow: 0 0 0 10px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}
.logo-text {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--text);
}
.logo-text em { font-style: normal; color: var(--blue-light); }

.header-right { display: flex; align-items: center; gap: 10px; }

.glass-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text-2);
    font-family: var(--font-body);
    font-size: 12px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.2s;
}
.glass-btn:hover {
    background: var(--glass-hi);
    border-color: var(--border-hi);
    color: var(--text);
}

.ai-chip {
    display: flex; align-items: center; gap: 7px;
    padding: 8px 14px;
    background: var(--blue-dim);
    border: 1px solid var(--border-hi);
    border-radius: 99px;
    font-size: 12px;
    font-weight: 500;
    color: var(--blue-light);
    letter-spacing: 0.3px;
}
.ai-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--blue);
    animation: logo-ping 1.8s ease infinite;
}

/* ── Layout ─────────────────────────────────────────────── */
.layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    padding: 24px 36px;
    max-width: 1380px;
    margin: 0 auto;
    min-height: calc(100vh - 65px);
    align-items: start;
}

/* ── Panel Left ─────────────────────────────────────────── */
.panel-left {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ── Glass Card ─────────────────────────────────────────── */
.glass-card {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 22px;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 4px 40px rgba(0,0,0,0.3),
                inset 0 1px 0 rgba(255,255,255,0.06);
    transition: border-color 0.3s;
}
.glass-card:hover { border-color: rgba(59,130,246,0.2); }

.label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 2.5px;
    color: var(--text-3);
    text-transform: uppercase;
    margin-bottom: 4px;
}

/* ── Counter Card ───────────────────────────────────────── */
.card-counter { text-align: center; }

.counter-wrap {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 12px auto 8px;
}
.counter-num {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 64px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -2px;
    z-index: 2;
    transition: transform 0.15s cubic-bezier(0.34,1.56,0.64,1);
}
.counter-num.pop { transform: scale(1.15); }

.counter-ring {
    position: absolute;
    inset: 0;
}
.counter-ring svg {
    width: 100%; height: 100%;
    transform: rotate(-90deg);
}
.cr-bg {
    fill: none;
    stroke: rgba(255,255,255,0.05);
    stroke-width: 5;
}
.cr-fill {
    fill: none;
    stroke: var(--blue);
    stroke-width: 5;
    stroke-linecap: round;
    stroke-dasharray: 276.5;
    stroke-dashoffset: 276.5;
    transition: stroke-dashoffset 0.6s cubic-bezier(0.4,0,0.2,1);
    filter: drop-shadow(0 0 8px var(--blue-glow));
}

.goal-line {
    font-size: 12px;
    color: var(--text-3);
}
.goal-line strong { color: var(--blue-light); }
.goal-line span   { color: var(--text-2); }

/* ── Stats Strip ────────────────────────────────────────── */
.stats-strip {
    display: flex;
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    backdrop-filter: blur(20px);
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.2),
                inset 0 1px 0 rgba(255,255,255,0.05);
}
.stat-box {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 16px 8px;
    color: var(--blue-light);
    transition: background 0.2s;
}
.stat-box:hover { background: var(--blue-dim2); }
.stat-box svg { opacity: 0.6; }
.sv {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}
.sl {
    font-size: 10px;
    color: var(--text-3);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
    flex-shrink: 0;
}

/* ── Angle Card ─────────────────────────────────────────── */
.card-angle { padding: 20px; }
.angle-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.phase-tag {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    padding: 4px 10px;
    border-radius: 99px;
    border: 1px solid var(--text-3);
    color: var(--text-3);
    background: transparent;
    transition: all 0.25s;
}
.phase-tag.down    { border-color: var(--yellow); color: var(--yellow); background: rgba(251,191,36,0.08); }
.phase-tag.up      { border-color: var(--blue);   color: var(--blue-light); background: var(--blue-dim); }
.phase-tag.counted { border-color: var(--green);  color: var(--green); background: rgba(34,211,165,0.08); }
.phase-tag.warn    { border-color: var(--red);    color: var(--red);   background: rgba(248,113,113,0.08); }

.angle-display {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 16px;
}
.angle-num {
    font-family: var(--font-display);
    font-size: 52px;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
    transition: color 0.2s;
}
.angle-deg {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-3);
}

/* Segmented bar */
.seg-bar {
    position: relative;
    display: flex;
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 5px;
    gap: 2px;
}
.seg {
    flex: 1;
    border-radius: 3px;
    position: relative;
}
.seg span {
    position: absolute;
    bottom: -18px;
    left: 0;
    font-size: 9px;
    color: var(--text-3);
}
.seg-red    { background: rgba(248,113,113,0.25); }
.seg-yellow { background: rgba(251,191,36,0.25); }
.seg-green  { background: rgba(34,211,165,0.25); }

.angle-cursor {
    position: absolute;
    top: -2px;
    width: 4px;
    height: 14px;
    background: white;
    border-radius: 2px;
    left: 0%;
    transition: left 0.15s ease;
    box-shadow: 0 0 8px rgba(255,255,255,0.5);
}
.seg-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-3);
    margin-top: 20px;
}

/* ── Controls ───────────────────────────────────────────── */
.controls { display: flex; flex-direction: column; gap: 10px; }

.btn-start {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    border: none;
    border-radius: var(--r-md);
    color: #fff;
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: 0 0 28px var(--blue-glow), 0 4px 12px rgba(0,0,0,0.3);
    transition: all 0.2s;
}
.btn-start:hover:not(:disabled) {
    background: linear-gradient(135deg, #60A5FA, #3B82F6);
    box-shadow: 0 0 40px var(--blue-glow), 0 4px 16px rgba(0,0,0,0.3);
    transform: translateY(-1px);
}
.btn-start:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.btn-stop, .btn-reset {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px;
    border-radius: var(--r-md);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    backdrop-filter: blur(12px);
    transition: all 0.2s;
}
.btn-stop {
    background: rgba(248,113,113,0.08);
    border: 1px solid rgba(248,113,113,0.3);
    color: var(--red);
}
.btn-stop:hover:not(:disabled) { background: rgba(248,113,113,0.15); }
.btn-stop:disabled { opacity: 0.3; cursor: not-allowed; }

.btn-reset {
    background: var(--glass);
    border: 1px solid var(--border);
    color: var(--text-2);
}
.btn-reset:hover { background: var(--glass-hi); color: var(--text); }

/* ── Panel Right ────────────────────────────────────────── */
.panel-right { display: flex; flex-direction: column; gap: 14px; }

/* ── Camera Frame ───────────────────────────────────────── */
.camera-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #050810;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    overflow: hidden;
    box-shadow: 0 0 60px rgba(59,130,246,0.08),
                0 8px 40px rgba(0,0,0,0.5);
}

/* Glowing blue frame border on live */
.camera-frame.is-live {
    border-color: rgba(59,130,246,0.35);
    box-shadow: 0 0 60px rgba(59,130,246,0.15),
                0 8px 40px rgba(0,0,0,0.5);
}

#camera-feed {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
}
#pose-canvas {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
}
.video-hidden { visibility: hidden; position: absolute; }

/* Camera top bar */
.cam-topbar {
    position: absolute;
    top: 14px; left: 14px; right: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 5;
    gap: 10px;
}

.live-chip {
    display: flex; align-items: center; gap: 7px;
    padding: 6px 14px;
    border-radius: 99px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    backdrop-filter: blur(12px);
    border: 1px solid;
    transition: all 0.3s;
}
.chip-off    { background: rgba(3,5,10,0.7); border-color: var(--text-3);    color: var(--text-3); }
.chip-live   { background: rgba(3,5,10,0.7); border-color: var(--blue);      color: var(--blue-light); }
.chip-paused { background: rgba(3,5,10,0.7); border-color: var(--yellow);    color: var(--yellow); }

.live-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
}
.chip-live .live-dot { animation: logo-ping 1.5s infinite; }

.feedback-pill {
    padding: 6px 14px;
    border-radius: 99px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(12px);
    background: rgba(3,5,10,0.7);
    border: 1px solid var(--border);
    color: var(--text);
    transition: all 0.25s;
}
.feedback-pill.hidden { display: none; }
.feedback-pill.good   { border-color: var(--green); color: var(--green); }
.feedback-pill.warn   { border-color: var(--red);   color: var(--red); }
.feedback-pill.info   { border-color: var(--blue);  color: var(--blue-light); }

/* Idle screen */
.idle-screen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(160deg, #050810 0%, #070D18 100%);
}
.idle-icon {
    width: 72px; height: 72px;
    border-radius: 50%;
    background: var(--glass);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-3);
    backdrop-filter: blur(10px);
    margin-bottom: 4px;
}
.idle-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 800;
    color: var(--text-2);
}
.idle-sub {
    font-size: 13px;
    color: var(--text-3);
    text-align: center;
}
.idle-sub strong { color: var(--blue-light); font-weight: 500; }

/* ── Tips Grid ──────────────────────────────────────────── */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}
.tip-card {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 14px;
    backdrop-filter: blur(16px);
    transition: border-color 0.2s, background 0.2s;
}
.tip-card:hover {
    border-color: rgba(59,130,246,0.25);
    background: var(--blue-dim2);
}
.tip-n {
    display: block;
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 800;
    color: var(--blue);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 6px;
}
.tip-t {
    font-size: 12px;
    color: var(--text-2);
    line-height: 1.5;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
        padding: 16px;
    }
    .panel-left { order: 2; }
    .panel-right { order: 1; }
    .tips-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
    .header { padding: 14px 16px; }
    .layout { padding: 12px; gap: 12px; }
}

/* ── Entry animations ───────────────────────────────────── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.glass-card { animation: fadeUp 0.5s ease both; }
.card-counter   { animation-delay: 0.05s; }
.stats-strip    { animation-delay: 0.10s; }
.card-angle     { animation-delay: 0.15s; }
.controls       { animation-delay: 0.20s; }
.camera-frame   { animation-delay: 0.08s; }
.tips-grid      { animation-delay: 0.22s; }