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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #efefef;
    color: #2f2f2f;
}

.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.diagram {
    position: relative;
    width: 1200px;
    max-width: 100%;
    aspect-ratio: 16 / 9;
}

.propeller {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 460px;
    max-width: 42vw;
    z-index: 2;
    animation: floatPropeller 3.4s ease-in-out infinite;
}

.propeller img {
    width: 100%;
    display: block;
    height: auto;
}

@keyframes floatPropeller {
    0% {
        transform: translate(-50%, -50%) translateY(0px);
    }
    50% {
        transform: translate(-50%, -50%) translateY(10px);
    }
    100% {
        transform: translate(-50%, -50%) translateY(0px);
    }
}

.label {
    position: absolute;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
    height: 58px;
    padding: 0 22px;
    border-radius: 999px;
    background: #7f684a;
    color: #fff;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    z-index: 3;
    white-space: nowrap;
}

.arrow {
    position: absolute;
    z-index: 1;
    pointer-events: none;
}

.arrow svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.arrow path {
    fill: none;
    stroke: #7f684a;
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.tesviye { top: 11%; left: 13%; }
.torna { top: 63%; left: 8%; }
.tarama { top: 8%; right: 7%; }
.modelleme { top: 61%; right: 0.5%; min-width: 205px; }
.dokum { bottom: 0.5%; left: 58%; transform: translateX(-50%); min-width: 185px; }

.arrow-tesviye {
    top: 8%;
    left: 28%;
    width: 170px;
    height: 90px;
}

.arrow-torna {
    top: 49%;
    left: 23%;
    width: 120px;
    height: 95px;
}

.arrow-tarama {
    top: 18%;
    right: 23%;
    width: 150px;
    height: 85px;
}

.arrow-modelleme {
    top: 56%;
    right: 18%;
    width: 145px;
    height: 100px;
}

.arrow-dokum {
    bottom: 9%;
    left: 50%;
    width: 170px;
    height: 110px;
    transform: translateX(-50%);
}

.mobile-layout {
    display: none;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.mobile-card {
    background: rgba(255,255,255,0.55);
    border: 1px solid rgba(127,104,74,0.12);
    border-radius: 28px;
    padding: 24px 18px 20px;
    box-shadow: 0 14px 32px rgba(0,0,0,0.05);
}

.mobile-propeller {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 18px;
}

.mobile-propeller img {
    width: min(72vw, 270px);
    max-width: 100%;
    height: auto;
    animation: mobileFloatPropeller 3.4s ease-in-out infinite;
}

@keyframes mobileFloatPropeller {
    0% { transform: translateY(0px); }
    50% { transform: translateY(8px); }
    100% { transform: translateY(0px); }
}

.mobile-title {
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
    color: #7f684a;
    letter-spacing: 0.4px;
}

.mobile-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.mobile-step {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffffff;
    border-radius: 18px;
    padding: 10px 12px;
    border: 1px solid rgba(127,104,74,0.1);
}

.mobile-step-number {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border-radius: 50%;
    background: #7f684a;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

.mobile-step-label {
    font-size: 16px;
    font-weight: 600;
    color: #5d4b34;
    letter-spacing: 0.2px;
}

@media (max-width: 900px) {
    .diagram {
        aspect-ratio: auto;
        min-height: 980px;
    }

    .propeller {
        width: 300px;
        top: 42%;
    }

    .label {
        min-width: 135px;
        height: 50px;
        padding: 0 18px;
        font-size: 17px;
    }

    .tesviye { top: 6%; left: 4%; }
    .tarama { top: 6%; right: 4%; }
    .torna { top: 65%; left: 2%; }
    .modelleme { top: 69%; right: 2%; min-width: 170px; }
    .dokum { bottom: 4%; left: 50%; min-width: 155px; }

    .arrow-tesviye { top: 12%; left: 28%; width: 110px; height: 60px; }
    .arrow-tarama { top: 12%; right: 27%; width: 110px; height: 60px; }
    .arrow-torna { top: 58%; left: 24%; width: 90px; height: 80px; }
    .arrow-modelleme { top: 60%; right: 24%; width: 95px; height: 80px; }
    .arrow-dokum { bottom: 10%; width: 120px; height: 90px; }
}

@media (max-width: 768px) {
    .section {
        min-height: auto;
        padding: 24px 14px;
    }

    .diagram {
        display: none;
    }

    .mobile-layout {
        display: block;
    }
}