* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    margin: 0;
    padding: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
    background: linear-gradient(135deg, #0b224e 0%, #06132d 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    -webkit-font-smoothing: antialiased;
}
.phone-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    box-sizing: border-box;
    text-align: center;
}
h1 {
    font-size: 30px;
    font-weight: 800;
    margin: 0 0 14px 0;
    letter-spacing: 1.5px;
    color: #ffffff;
    text-shadow: 0px 2px 4px rgba(0, 0, 0, 0.6), 0px 4px 12px rgba(0, 0, 0, 0.4);
}
.subtitle {
    font-size: 13.5px;
    font-weight: 500;
    color: #b0c9ea;
    margin: 0 0 8px 0;
    letter-spacing: 0.5px;
}
.tip-text {
    font-size: 12.5px;
    font-weight: 400;
    color: #8faecf;
    margin: 0 0 32px 0;
    letter-spacing: 0.5px;
}
.status-text {
    font-size: 13px;
    color: #cbdcf5;
    margin-bottom: 12px;
    min-height: 20px;
}
.status-text.warn { color: #fce0a2; }
.status-text.err  { color: #f87171; }
.status-text.ok   { color: #6ee7b7; }
.form-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px 40px 30px 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    box-sizing: border-box;
}
.form-group {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}
.form-group label {
    width: 55px;
    font-size: 15px;
    color: #ffffff;
    text-align: left;
    font-weight: 600;
    letter-spacing: 1px;
    flex-shrink: 0;
}
.form-group input {
    flex: 1;
    height: 42px;
    background-color: #eef2f7;
    border: none;
    border-radius: 8px;
    padding: 0 14px;
    font-size: 14px;
    color: #111111;
    outline: none;
    box-sizing: border-box;
    text-align: left;
}
.form-group input::placeholder { color: #999999; font-size: 13px; }
.form-group input:disabled { opacity: 0.6; }
.submit-btn {
    width: 104%;
    margin-left: 2%;
    height: 46px;
    background: linear-gradient(to bottom, #f3d498 0%, #cc9d4b 100%);
    border: none;
    border-radius: 23px;
    color: #311c02;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    margin-top: 10px;
    box-shadow: 0 4px 15px rgba(204, 157, 75, 0.4), inset 0 1px 0 rgba(255,255,255,0.3);
    transition: all 0.2s ease;
    box-sizing: border-box;
}
.submit-btn:active { transform: scale(0.98); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.call-area {
    margin-top: 20px;
    text-align: center;
}
.call-btn {
    width: 104%;
    margin-left: 2%;
    height: 46px;
    background: linear-gradient(180deg, #4caf50, #2e7d32);
    border: none;
    border-radius: 23px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    transition: all 0.2s ease;
}
.call-btn:active { transform: scale(0.98); }
.call-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.hangup-btn {
    width: 104%;
    margin-left: 2%;
    height: 46px;
    background: linear-gradient(180deg, #ef4444, #b91c1c);
    border: none;
    border-radius: 23px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
    transition: all 0.2s ease;
    margin-top: 10px;
}
.hangup-btn:active { transform: scale(0.98); }
.call-timer {
    margin-top: 12px;
    font-size: 20px;
    font-weight: bold;
    color: #fce0a2;
    display: none;
}
.call-timer.show { display: block; }
.work-datetime {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 0;
    text-align: center;
    font-size: 13px;
    color: #7b9bcb;
    letter-spacing: 1px;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(6px);
    border-top: 1px solid rgba(255,255,255,0.08);
    z-index: 10;
}
.work-datetime .date-part {
    display: block;
    font-size: 14px;
    color: #a0c4e8;
    margin-bottom: 4px;
    font-weight: 500;
}
.work-datetime .time-part {
    display: block;
    font-size: 22px;
    color: #d4e4f7;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    font-family: "SF Mono", "Consolas", "Menlo", monospace;
}